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COSRX The 6 Peptide Skin Booster Serum Versus MEDI-PEEL Peptide 9 Volume All In One Essence

Serum
Essence
Korean Brand South Korea
Korean Brand South Korea

Updated on June 28, 2024

Overview

What they are

These products are both reef safe . They have a total of 18 ingredients in common

Cool Features

They both contain hyaluronic acid, niacinamide and peptides

Suited For

They're both likely to be good for fighting acne, anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores, scar healing and dark spots

Free From

They both do not contain any common allergens, parabens or sulfates

What's Inside

They both contain fragrances and oils

We independently verify ingredients, and our claims are backed by peer-reviewed research. Spot a product that needs an update? Let us know.

Ingredient Info

Click any item below to learn more and see relevant ingredients

At a glance

Click on any of the items below to learn more

Notable Ingredients

Benefits

Concerns

Notable Ingredients

Benefits

Concerns

Ingredients Side-by-side

found in both products
The 6 Peptide Skin Booster Serum
Water Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

Dipropylene Glycol Masking, Solvent

Dipropylene Glycol is a synthetically created stabilizer and solvent. It is a part of the glycol class in the alcohol family.

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Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon
2 Benefits

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Pentylene Glycol Skin Conditioning, Solvent

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

1,2-Hexanediol Skin Conditioning, Solvent

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

Niacinamide Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconGood for Minimizing Pores IconGood for Dark Spots IconHelps fight Acne IconHelps brighten skin Icon
NiacinamideNiacinamide Icon 6 Benefits

Niacinamide has emerged as an all-star ingredient due to its many benefits.

Acetyl Hexapeptide-8 Humectant, Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Acetyl Hexapeptide-8 is a peptide. A common name for this peptide is Argireline.

Copper Tripeptide-1 Skin Conditioning
Peptide IconHelps with Anti-Aging Icon
PeptidePeptide Icon Helps with Anti-AgingHelps with Anti-Aging Icon

Copper Tripeptide-1 is a peptide naturally found in body fluids. Peptides are building blocks for protein.

Sh-Polypeptide-121 Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Sh-Polypeptide-121 is a peptide.

Dipeptide Diaminobutyroyl Benzylamide Diacetate Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Dipeptide Diaminobutyroyl Benzylamide Diacetate is a peptide.

Oligopeptide-68 Bleaching
Peptide Icon
PeptidePeptide Icon

Oligopeptide-68 is a peptide.

Palmitoyl Tripeptide-8 Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Palmitoyl Tripeptide-8 isn't fungal acne safe and is a peptide.

Allantoin Skin Conditioning, Skin Protecting, Soothing
0 / 0 Helps reduce Skin Redness IconHelps reduce irritation IconGood for Scar Healing Icon
3 Benefits

Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.

0 Com. / 0 Irr.
Sodium Hyaluronate Humectant, Skin Conditioning
0 / 0 Hyaluronic Acid Icon
Hyaluronic AcidHyaluronic Acid Icon

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

0 Com. / 0 Irr.
Acetyl Glucosamine Skin Conditioning
Vitamin C Icon
Vitamin CVitamin C Icon

Acetyl Glucosamine is an antioxidant and humectant. It is a form of Vitamin C.

Serine Masking, Skin Conditioning

Serine is an amino acid naturally found in our body. Our bodies use amino acids to create protein.

Alanine Masking, Skin Conditioning

Alanine is an amino acid and is already found in the human body.

Glycine Buffering, Skin Conditioning

Glycine is an amino acid that helps build proteins. It is already present in our skin as our bodies produce them naturally.

Threonine

Threonine is an amino-acid. It helps hydrate the skin and has antioxidant benefits.

Arginine Masking, Skin Conditioning
Not safe for Fungal Acne Icon
Not safe for Fungal AcneNot safe for Fungal Acne Icon

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

Proline Skin Conditioning

Proline is an amino-acid. It helps moisturize the skin and plays an important role in creating proteins.

Betaine Humectant, Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon
3 Benefits

Betaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.

Sodium PCA Humectant, Skin Conditioning
0 / 0

Sodium PCA is the sodium salt of pyroglutamic acid and is naturally occurring on human skin.

0 Com. / 0 Irr.
Sodium Lactate Buffering, Humectant

Sodium Lactate is the sodium salt of lactic acid, an AHA. It is a humectant and used to adjust the pH of a product.

PCA Humectant, Moisturising

PCA is derived from amino acids and is naturally found in our skin's barrier.

Glutamic Acid Humectant

Glutamic Acid is an amino acid that is found in all living organisms. Our bodies use this to help nerve cells in the brain communicate with other cells.

Lysine Hcl Skin Conditioning
Helps hydrate Dry Skin Icon
Helps hydrate Dry SkinHelps hydrate Dry Skin Icon

Lysine HCl is an alpha amino acid salt.

Tocopherol Antioxidant, Masking, Skin Conditioning
0-3 / 0-3 Vitamin E IconAntioxidant IconHelps hydrate Dry Skin IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin IconMay cause irritation Icon
Vitamin EVitamin E Icon AntioxidantAntioxidant Icon 4 Benefits May cause irritationMay cause irritation Icon

Tocopherol (also known as Vitamin E) is a common antioxidant used to help protect the skin from free-radicals and strengthen the skin barrier. It's also fat soluble - this means our skin is great at absorbing it.

0-3 Com. / 0-3 Irr.
Dextran

We don't have a description for Dextran.

Unknown Full details ->
Glycine Soja Oil Emollient, Skin Conditioning
3 / 0 Oil IconNot safe for Fungal Acne Icon
OilOil Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Glycine Soja Oil comes from the soybean. Glycine Soja is native to eastern Asia.

3 Com. / 0 Irr.
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Hydrogenated Lecithin Emulsifying, Skin Conditioning

Hydrogenated Lecithin is created from the hydrogenation of lecithin. Hydrogenation is a chemical reaction between molecule hydrogen and another element.

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Ammonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.

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Polyacrylate Crosspolymer-6 Emulsion Stabilising

Polyacrylate Crosspolymer-6 is a texture enhancer and pH adjuster.

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Butylene Glycol Humectant, Masking, Skin Conditioning
1 / 0

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

1 Com. / 0 Irr.
Xanthan Gum Emulsifying, Emulsion Stabilising, Gel Forming

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

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Ethylhexylglycerin Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

Adenosine Skin Conditioning
Helps with Anti-Aging IconGood for Scar Healing Icon
2 Benefits

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Polyquaternium-51 Skin Conditioning

Polyquaternium-51 is a polymer salt. It helps hydrate the skin by creating a film on top. This film traps moisture in, keeping your skin soft and hydrated.

Disodium EDTA

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

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Citric Acid Buffering, Masking
AHA IconGood for Skin Texture IconGood for Minimizing Pores IconGood for Scar Healing IconHelps brighten skin IconMay cause irritation IconMay worsen Rosacea Icon
AHAAHA Icon 4 Benefits 2 Concerns

Citric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).

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Caprylyl Glycol Emollient, Humectant, Skin Conditioning

Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

T-Butyl Alcohol Perfuming, Solvent
Alcohol IconFragrance Icon
AlcoholAlcohol Icon FragranceFragrance Icon

T-Butyl Alcohol it is most commonly used as a solvent.

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Potassium Sorbate Preservative
Preservative Icon
PreservativePreservative Icon

Potassium Sorbate is a preservative used to prevent yeast and mold in products. It is commonly found in both cosmetic and food products.

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Sodium Oleate Cleansing, Emulsifying

We don't have a description for Sodium Oleate.

Unknown Full details ->
Peptide 9 Volume All In One Essence
Water Skin Conditioning, Solvent

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

Methylpropanediol Solvent

Methylpropanediol is a synthetic solvent and humectant.

Glycerin Humectant, Skin Conditioning, Skin Protecting
0 / 0 Helps hydrate Dry Skin IconHelps brighten skin Icon
2 Benefits

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

0 Com. / 0 Irr.
Hydrogenated Polyisobutene Emollient, Skin Conditioning
1 / 2

Hydrogenated Polyisobutene is a synthetic polymer. Polymers are compounds with high molecular weight. Hydrogenated Polyisobutene is an emollient and texture enhancer.

1 Com. / 2 Irr.
Methyl Perfluoroisobutyl Ether Solvent

We don't have a description for Methyl Perfluoroisobutyl Ether.

Unknown Full details ->
Caprylic/Capric Triglyceride Masking, Skin Conditioning

Caprylic/Capric Triglyceride is an emollient, solvent, and texture enhancer. It is considered a skin-softener by helping the skin prevent moisture loss.

Methyl Perfluorobutyl Ether Solvent

We don't have a description for Methyl Perfluorobutyl Ether.

Unknown Full details ->
Cyclopentasiloxane Emollient, Skin Conditioning, Solvent
Silicon Icon
SiliconSilicon Icon

Cyclopentasiloxane is a silicone used to improve texture and trap moisture. An easier name for this is D5.

Disliked Full details ->
Niacinamide Smoothing
Niacinamide IconGood for Oily Skin IconHelps reduce Skin Redness IconGood for Minimizing Pores IconGood for Dark Spots IconHelps fight Acne IconHelps brighten skin Icon
NiacinamideNiacinamide Icon 6 Benefits

Niacinamide has emerged as an all-star ingredient due to its many benefits.

Butylene Glycol Dicaprylate/Dicaprate Emollient, Skin Conditioning

We don't have a description for Butylene Glycol Dicaprylate/Dicaprate.

Very Disliked Full details ->
Cetearyl Alcohol Emollient, Emulsifying, Emulsion Stabilising
2 / 1 Fatty Alcohol IconMay worsen Oily Skin IconBad for Acne Prone Skin IconNot safe for Fungal Acne Icon
Fatty AlcoholFatty Alcohol Icon 3 Concerns

Cetearyl alcohol is a mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is mainly used as an emulsifier. Emulsifiers help prevent the separation of oils and products. Due to its composition, it can also be used to thicken a product or help create foam.

2 Com. / 1 Irr.
Very Disliked Full details ->
Cyclohexasiloxane Emollient, Skin Conditioning, Solvent
Silicon Icon
SiliconSilicon Icon

Cyclohexasiloxane is a type of silicone more commonly known as D6. It is an emollient and solvent.

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Elaeis Guineensis Oil Emollient
Oil IconNot safe for Fungal Acne Icon
OilOil Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Elaeis Guineensis Oil comes from the African Palm tree. This tree is native to Western and Southwestern Africa.

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Decyl Glucoside Cleansing, Emulsion Stabilising

Decyl Glucoside is a glucose-based surfactant. Surfactants help clean the skin by trapping oil, sebum, and dirt to be washed away.

Sodium Myristoyl Glutamate Cleansing

We don't have a description for Sodium Myristoyl Glutamate.

Unknown Full details ->
Stearic Acid Cleansing, Emulsifying, Emulsion Stabilising
2-3 / 0 May worsen Oily Skin IconNot safe for Fungal Acne Icon
2 Concerns

Stearic Acid is a fatty acid. It is an emollient, emulsifier, and texture enhancer.

2-3 Com. / 0 Irr.
Very Disliked Full details ->
Glyceryl Stearate Emollient, Emulsifying
1 / 0 Not safe for Fungal Acne Icon
Not safe for Fungal AcneNot safe for Fungal Acne Icon

Glyceryl Stearate is a mix of glycerin and stearic acid.

1 Com. / 0 Irr.
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Peg-100 Stearate
0 / 0 Not safe for Fungal Acne Icon
Not safe for Fungal AcneNot safe for Fungal Acne Icon

Peg-100 Stearate is an emollient and emulsifier. PEGS are a hydrophilic polyether compound . There are 100 ethylene oxide monomers in Peg-100 Stearate. Peg-100 Stearate is polyethylene glycol ester of stearic acid.

0 Com. / 0 Irr.
Very Disliked Full details ->
Betaine Humectant, Skin Conditioning
Helps hydrate Dry Skin IconHelps reduce Skin Redness IconHelps reduce irritation Icon
3 Benefits

Betaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.

Hydroxyethyl Urea Humectant, Skin Conditioning

We don't have a description for Hydroxyethyl Urea.

Elaeis Guineensis Kernel Oil Emollient
Oil IconNot safe for Fungal Acne Icon
OilOil Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Elaeis Guineensis Oil comes from the African Palm tree. This tree is native to Western and Southwestern Africa.

Very Disliked Full details ->
Hydroxyacetophenone Antioxidant
Antioxidant Icon
AntioxidantAntioxidant Icon

Hydroxyacetophenone is antioxidant and helps with skin conditioning.

Dimethicone Emollient, Skin Conditioning, Skin Protecting
1 / 0 Silicon Icon
SiliconSilicon Icon

Dimethicone is a silicone used for making products smooth and silky. It also has the added benefit of sealing in hydration. The amount of dimethicone found in beauty products is considered safe and non-comedogenic, meaning it won't clog pores.

1 Com. / 0 Irr.
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Arginine Masking, Skin Conditioning
Not safe for Fungal Acne Icon
Not safe for Fungal AcneNot safe for Fungal Acne Icon

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

Ammonium Acryloyldimethyltaurate/Vp Copolymer

Ammonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.

Disliked Full details ->
Carbomer Emulsion Stabilising, Gel Forming
1 / 0

Carbomer is a polymer of acrylic acid. Its main role is to create gel consistency within products.

1 Com. / 0 Irr.
Disliked Full details ->
Hydrogenated Lecithin Emulsifying, Skin Conditioning

Hydrogenated Lecithin is created from the hydrogenation of lecithin. Hydrogenation is a chemical reaction between molecule hydrogen and another element.

Propanediol Solvent

Propanediol helps absorb ingredients into your skin, boosting their benefits. It can act as an emollient, making your skin softer. Propanediol can help products last longer by boosting the properties of preservatives within the formulation.

Juniperus Communis Fruit Extract Perfuming, Skin Conditioning
Fragrance Icon
FragranceFragrance Icon

Juniperus Communis Fruit Extract is a fragrance.

Unknown Full details ->
Eucalyptus Globulus Leaf Extract Perfuming, Skin Conditioning
Fragrance Icon
FragranceFragrance Icon

Eucalyptus Globulus Leaf Extract is a fragrance.

Very Disliked Full details ->
Dimethicone/Vinyl Dimethicone Crosspolymer Skin Conditioning

Dimethicone/Vinyl Dimethicone Crosspolymer is a silicone used to improve the texture of products and absorb oil. It does not get absorbed into the skin.

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Glyceryl Acrylate/Acrylic Acid Copolymer Humectant

Glyceryl Acrylate/Acrylic Acid Copolymer is made up of glycerin and polyacrylic acid. It helps hydrate your skin as a humectant.

Sodium Hyaluronate Crosspolymer Humectant, Skin Conditioning
Hyaluronic Acid Icon
Hyaluronic AcidHyaluronic Acid Icon

Sodium Hyaluronate Crosspolymer is a type of hyaluronic acid. In fact, it is modified version of hyaluronic acid.

Ethylhexylglycerin Skin Conditioning

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

Allantoin Skin Conditioning, Skin Protecting, Soothing
0 / 0 Helps reduce Skin Redness IconHelps reduce irritation IconGood for Scar Healing Icon
3 Benefits

Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.

0 Com. / 0 Irr.
Ammonium Lactate Buffering, Humectant, Skin Conditioning

We don't have a description for Ammonium Lactate.

Disliked Full details ->
Urea Buffering, Humectant, Skin Conditioning
Helps hydrate Dry Skin IconGood for Skin Texture IconMay worsen Eczema IconMay worsen Rosacea Icon
2 Benefits 2 Concerns

Urea is also called carbamide and is the diamide of carbonic acid. In cosmetics, urea is used to hydrate the skin. It also provides exfoliation in higher concentrations.

Parfum Masking, Perfuming
Fragrance IconMay worsen Eczema IconMay worsen Rosacea Icon
FragranceFragrance Icon 2 Concerns

Parfum is a catch-all term for an ingredient or more that is used to give a scent to products.

Very Disliked Full details ->
Adenosine Skin Conditioning
Helps with Anti-Aging IconGood for Scar Healing Icon
2 Benefits

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Sodium Hyaluronate Humectant, Skin Conditioning
0 / 0 Hyaluronic Acid Icon
Hyaluronic AcidHyaluronic Acid Icon

Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

0 Com. / 0 Irr.
Laureth-23 Cleansing, Emulsifying
3 / 0

Laureth-23 is created by reacting ethylene oxide with Lauryl Alcohol.

3 Com. / 0 Irr.
Very Disliked Full details ->
Propylene Glycol Humectant, Skin Conditioning, Solvent
0 / 0 May worsen Eczema Icon
May worsen EczemaMay worsen Eczema Icon

Propylene Glycol is an odorless, colorless liquid. As a humectant, it helps skin retain moisture. It also aids in delivering active ingredients.

0 Com. / 0 Irr.
Disliked Full details ->
Disodium EDTA

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

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Hydrolyzed Glycosaminoglycans Humectant, Skin Conditioning

We don't have a description for Hydrolyzed Glycosaminoglycans.

Butylene Glycol Humectant, Masking, Skin Conditioning
1 / 0

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

1 Com. / 0 Irr.
Camellia Sinensis Leaf Extract Antimicrobial, Antioxidant, Astringent
Antioxidant IconHelps reduce Skin Redness IconHelps reduce irritation IconGood for Minimizing Pores IconHelps with Anti-Aging IconHelps fight Acne Icon
AntioxidantAntioxidant Icon 5 Benefits

Camellia Sinensis Leaf Extract is derived from the leaves of the tea plant. Black tea, green tea, and oolong tea are all harvested from this plant.

Taraxacum Officinale Rhizome/Root Extract Skin Conditioning, Soothing

We don't have a description for Taraxacum Officinale Rhizome/Root Extract.

Unknown Full details ->
Sodium Guaiazulene Sulfonate

We don't have a description for Sodium Guaiazulene Sulfonate.

Unknown Full details ->
Argania Spinosa Kernel Oil Emollient, Skin Conditioning
Oil IconHelps hydrate Dry Skin IconNot safe for Fungal Acne Icon
OilOil Icon Helps hydrate Dry SkinHelps hydrate Dry Skin Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Argania Spinosa Kernel Oil is derived from the kernels of the argania spinosa tree. You may know it as argan oil.

Magnolia Officinalis Bark Extract Antimicrobial, Skin Conditioning

We don't have a description for Magnolia Officinalis Bark Extract.

Unknown Full details ->
Anthemis Nobilis Flower Water Masking, Skin Conditioning

This ingredient is created by distilling parts of the Roman Chamomile flower.

Fructan Skin Conditioning

We don't have a description for Fructan.

Unknown Full details ->
Benzyl Glycol Solvent

We don't have a description for Benzyl Glycol.

Hydrolyzed Hyaluronic Acid Humectant, Skin Conditioning
Hyaluronic Acid Icon
Hyaluronic AcidHyaluronic Acid Icon

Hydrolyzed Hyaluronic Acid is a form of hyaluronic acid. It is created by the hydrolysis of hyaluronic acid with a high molecular weight. Once created, Hydrolyzed Hyaluronic Acid has a low molecular weight.

Desamido Collagen Skin Conditioning
Helps with Anti-Aging Icon
Helps with Anti-AgingHelps with Anti-Aging Icon

Desamido Collagen can help to reduce the effects of aging.

Hydrolyzed Elastin Emollient, Skin Conditioning

We don't have a description for Hydrolyzed Elastin.

Unknown Full details ->
Hydrolyzed Collagen Emollient, Humectant, Skin Conditioning
Helps with Anti-Aging Icon
Helps with Anti-AgingHelps with Anti-Aging Icon

Hydrolyzed collagen has a misleading name because it is actually a mixture of various proteins/peptides. This ingredient has skin hydrating properties.

Decylene Glycol Skin Conditioning

We don't have a description for Decylene Glycol.

Unknown Full details ->
Sodium Polyacrylate Absorbent, Emollient, Emulsion Stabilising

Sodium Polyacrylate is the sodium salt of polyacrylic acid.

Caprylyl Glycol Emollient, Humectant, Skin Conditioning

Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

Trideceth-6 Emulsifying

We don't have a description for Trideceth-6.

Unknown Full details ->
Pentylene Glycol Skin Conditioning, Solvent

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

Hydrogenated Polydecene Emollient, Masking, Skin Conditioning

Hydrogenated Polydecene is an emollient. It creates a non-occlusive film on the skin that offers extra protection for your skin barrier.

Glyceryl Polymethacrylate

We don't have a description for Glyceryl Polymethacrylate.

Anemarrhena Asphodeloides Root Extract Skin Conditioning

This ingredient is more commonly known as Zhi Mu root. You might see this ingredient listed under 'Volufiline' products.

1,2-Hexanediol Skin Conditioning, Solvent

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

Raspberry Ketone Masking, Perfuming, Skin Conditioning
Fragrance Icon
FragranceFragrance Icon

Raspberry Ketone is a fragrance.

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Hyaluronic Acid Humectant, Moisturising, Skin Conditioning
Hyaluronic Acid IconGood for Skin Texture IconHelps with Anti-Aging IconGood for Scar Healing IconHelps brighten skin IconMay cause irritation Icon
Hyaluronic AcidHyaluronic Acid Icon 4 Benefits May cause irritationMay cause irritation Icon

Hyaluronic acid is naturally found in healthy skin. It is a humectant, meaning it draws moisture to your skin.

Sorbitan Laurate Emulsifying
1-2 / 1-2 Not safe for Fungal Acne Icon
Not safe for Fungal AcneNot safe for Fungal Acne Icon

Sorbitan Laurate is created from lauric acid and derivatives from sorbitol. It is an emulsifier.

1-2 Com. / 1-2 Irr.
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Nonoxynol-9 Emulsifying

We don't have a description for Nonoxynol-9.

Unknown Full details ->
Phenoxyethanol Preservative
Preservative Icon
PreservativePreservative Icon

Phenoxyethanol is a preservative that has germicide, antimicrobial, and aromatic properties. Studies show that phenoxyethanol can prevent microbial growth. By itself, it has a scent that is similar to that of a rose.

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Hydroxyethylcellulose Emulsion Stabilising, Stabilising

Hydroxyethylcellulose is used to improve the texture of products. It is created from a chemical reaction involving ethylene oxide and alkali-cellulose. Cellulose is a sugar found in plant cell walls and help give plants structure.

Acetyl Dipeptide-1 Cetyl Ester Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Acetyl Dipeptide-1 Cetyl Ester is a peptide.

Astaxanthin Skin Conditioning

Astaxanthin is a carotene pigment and red pigment. It's what makes salmon a pink color.

Ethyl Hexanediol Solvent

Ethyl Hexanediol is an aliphatic alcohol. It is a solvent.

Acetyl Hexapeptide-8 Humectant, Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Acetyl Hexapeptide-8 is a peptide. A common name for this peptide is Argireline.

Copper Tripeptide-1 Skin Conditioning
Peptide IconHelps with Anti-Aging Icon
PeptidePeptide Icon Helps with Anti-AgingHelps with Anti-Aging Icon

Copper Tripeptide-1 is a peptide naturally found in body fluids. Peptides are building blocks for protein.

Oligopeptide-29 Antioxidant, Skin Protecting
Peptide IconAntioxidant Icon
PeptidePeptide Icon AntioxidantAntioxidant Icon

Oligopeptide-29 is an antioxidant and is a peptide.

Unknown Full details ->
Oligopeptide-32 Antiseborrhoeic, Skin Conditioning
Peptide Icon
PeptidePeptide Icon

Oligopeptide-32 is a peptide.

Unknown Full details ->
Palmitoyl Pentapeptide-4 Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

You might know this ingredients as Matrixyl. It is a peptide.

Palmitoyl Tripeptide-1 Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Palmitoyl Tripeptide-1 is a 3-amino acid peptide. Peptides are building blocks for protein.

Palmitoyl Tetrapeptide-7 Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Palmitoyl Tetrapeptide-7 is a peptide. Peptides are building blocks for protein.

Palmitoyl Tripeptide-5 Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Palmitoyl Tripeptide-5 isn't fungal acne safe and is a peptide.

Palmitoyl Oligopeptide Cleansing, Skin Conditioning
Peptide IconNot safe for Fungal Acne Icon
PeptidePeptide Icon Not safe for Fungal AcneNot safe for Fungal Acne Icon

Palmitoyl Oligopeptide is a form of peptide. It is created by blending peptides with palmitic acid. Peptides are building blocks for protein.

Water, Methylpropanediol, Glycerin, Hydrogenated Polyisobutene, Methyl Perfluoroisobutyl Ether, Caprylic/Capric Triglyceride, Methyl Perfluorobutyl Ether, Cyclopentasiloxane, Niacinamide, Butylene Glycol Dicaprylate/Dicaprate, Cetearyl Alcohol, Cyclohexasiloxane, Elaeis Guineensis Oil, Decyl Glucoside, Sodium Myristoyl Glutamate, Stearic Acid, Glyceryl Stearate, Peg-100 Stearate, Betaine, Hydroxyethyl Urea, Elaeis Guineensis Kernel Oil, Hydroxyacetophenone, Dimethicone, Arginine, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Carbomer, Hydrogenated Lecithin, Propanediol, Juniperus Communis Fruit Extract, Eucalyptus Globulus Leaf Extract, Dimethicone/Vinyl Dimethicone Crosspolymer, Glyceryl Acrylate/Acrylic Acid Copolymer, Sodium Hyaluronate Crosspolymer, Ethylhexylglycerin, Allantoin, Ammonium Lactate, Urea, Parfum, Adenosine, Sodium Hyaluronate, Laureth-23, Propylene Glycol, Disodium EDTA, Hydrolyzed Glycosaminoglycans, Butylene Glycol, Camellia Sinensis Leaf Extract, Taraxacum Officinale Rhizome/Root Extract, Sodium Guaiazulene Sulfonate, Argania Spinosa Kernel Oil, Magnolia Officinalis Bark Extract, Anthemis Nobilis Flower Water, Fructan, Benzyl Glycol, Hydrolyzed Hyaluronic Acid, Desamido Collagen, Hydrolyzed Elastin, Hydrolyzed Collagen, Decylene Glycol, Sodium Polyacrylate, Caprylyl Glycol, Trideceth-6, Pentylene Glycol, Hydrogenated Polydecene, Glyceryl Polymethacrylate, Anemarrhena Asphodeloides Root Extract, 1,2-Hexanediol, Raspberry Ketone, Hyaluronic Acid, Sorbitan Laurate, Nonoxynol-9, Phenoxyethanol, Hydroxyethylcellulose, Acetyl Dipeptide-1 Cetyl Ester, Astaxanthin, Ethyl Hexanediol, Acetyl Hexapeptide-8, Copper Tripeptide-1, Oligopeptide-29, Oligopeptide-32, Palmitoyl Pentapeptide-4, Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-5, Palmitoyl Oligopeptide

Ingredients Explained

These ingredients are found in both products.

Ingredients higher up in an ingredient list are typically present in a larger amount.

Skin Conditioning, Solvent
Loved

Water. It's the most common cosmetic ingredient of all. You'll usually see it at the top of ingredient lists, meaning that it makes up the largest part of the product.

So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.

You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Stay hydrated!

Learn more about Water
Humectant, Skin Conditioning, Skin Protecting
Loved

Glycerin is already naturally found in your skin. It helps moisturize and protect your skin.

A study from 2016 found glycerin to be more effective as a humectant than AHAs and hyaluronic acid.

As a humectant, it helps the skin stay hydrated by pulling moisture to your skin. The low molecular weight of glycerin allows it to pull moisture into the deeper layers of your skin.

Hydrated skin improves your skin barrier; Your skin barrier helps protect against irritants and bacteria.

Glycerin has also been found to have antimicrobial and antiviral properties. Due to these properties, glycerin is often used in wound and burn treatments.

In cosmetics, glycerin is usually derived from plants such as soybean or palm. However, it can also be sourced from animals, such as tallow or animal fat.

This ingredient is organic, colorless, odorless, and non-toxic.

Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.

Learn more about Glycerin
Skin Conditioning, Solvent
Mixed

Pentylene glycol is typically used within a product to thicken it. It also adds a smooth, soft, and moisturizing feel to the product. It is naturally found in plants such as sugar beets.

The hydrophilic trait of Pentylene Glycol makes it a humectant. As a humectant, Pentylene Glycol helps draw moisture from the air to your skin. This can help keep your skin hydrated.

This property also makes Pentylene Glycol a great texture enhancer. It can help thicken or emulsify a product. Emulsifiers help stabilize a product. It does this by preventing certain ingredients from separating.

Pentylene Glycol also acts as a mild preservative and helps to keep a product microbe-free.

Some people may experience mild eye and skin irritation from Pentylene Glycol. We always recommend speaking with a professional about using this ingredient in your routine.

Pentylene Glycol has a low molecular weight and is part of the 1,2-glycol family.

Learn more about Pentylene Glycol
Skin Conditioning, Solvent
Mixed

1,2-Hexanediol is a multi-tasker ingredient. It acts as a preservative to increase shelf-life and can aid other preservatives in preventing microbe growth. 1,2-Hexanediol also helps the skin retain moisture as a humectant.

In products that are water-based, this ingredient can help stabilize perfumes and fragrances. It can also help make the texture of products softer and more smooth.

Smoothing
Loved

Niacinamide has emerged as an all-star ingredient due to its many benefits.

It is known to treat acne by reducing inflammation. It also helps fade dark-spots and strengthen the skin by promoting the growth of the ceramide barrier.

Other benefits include smoothing wrinkles and minimizing redness.

The cherry on top? Niacinamide can also help build keratin, a protein that keeps skin firm.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

Niacinamide can be mixed with other ingredients to boost benefits. For instance, it has shown to be effective when used with copper, folic acid, and zinc to treat acne.

Learn more about Niacinamide
Humectant, Skin Conditioning
Loved

Acetyl Hexapeptide-8 is a peptide. A common name for this peptide is Argireline.

Argireline has a similar function to botox. It prevents muscle movement and contractions. By preventing muscles from moving, Argireline also prohibits the formation of fine lines and wrinkles. However, research is lacking in proving this ingredient to be as effective as botox.

Argireline tells our body to create more collagen. Collagen is a protein that makes connective tissue. Boosting collagen production leads to a healthier skin barrier. Having a healthy skin barrier means having firm and hydrated skin.

Read more about other common types of peptides here:

Learn more about Acetyl Hexapeptide-8
Skin Conditioning
Loved

Copper Tripeptide-1 is a peptide naturally found in body fluids. Peptides are building blocks for protein.

Studies show this ingredient tells our body to create more collagen and elastin. Collagen is a protein that makes connective tissue. Elastin is the protein responsible for giving our skin elasticity. Our bodies start to slow down collagen and elastin production with age.

Boosting collagen and elastin production can help create a healthier skin barrier. Having a healthy skin barrier means having firm and hydrated skin. It's a win-win situation!

This ingredient helps with scar healing. This is because it breaks down damaged collagen, the main component of scar tissue. It may also help with reducing sunspots, acne scars, and uneven skin tone.

On top of all this, Copper Tripeptide-1 is also an antioxidant. Antioxidants help the body fight off free-radicals. Free radicals are molecules that damage our cells, such as pollution and tobacco smoke.

More benefits: Copper Tripeptide-1 helps maintain tissues in blood vessels and promote natural hyaluronic acid in skin.

Read more about other common types of peptides here:

Learn more about Copper Tripeptide-1
Skin Conditioning, Skin Protecting, Soothing
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Allantoin plays a role in soothing and moisturizing the skin. Because of this, it is often added to products with strong active ingredients.

Some studies have shown this ingredient can promote wound healing with higher concentrations.

Allantoin is derived from the comfrey plant but produced synthetically for cosmetic products to ensure purity.

Learn more about Allantoin
Humectant, Skin Conditioning
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Sodium Hyaluronate is hyaluronic acid's salt form. It is commonly derived from the sodium salt of hyaluronic acid.

Like hyaluronic acid, it is great at holding water and acts as a humectant. This makes it a great skin hydrating ingredient.

Sodium Hyaluronate is naturally occurring in our bodies and is mostly found in eye fluid and joints.

These are some other common types of Hyaluronic Acid:

Learn more about Sodium Hyaluronate
Masking, Skin Conditioning
Mixed

Arginine is an amino acid that is important for human development. Your body uses is it to produce hair keratin and skin collagen.

As a cosmetic ingredient, Arginine has antioxidant properties and can also help repair damaged skin. This ingredient is derived either synthetically or from animals.

Arginine isn't fungal acne safe when used in the presence of other lipids (fats, fatty acids, oils, esters, etc). Oils and fats occur naturally within the skin, so take caution when using Arginine if you're prone to fungal acne.

Learn more about Arginine
Humectant, Skin Conditioning
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Betaine is a common humectant (a substance that promotes retention of moisture). It's known to be gentle on the skin and can help balance hydration.

Betaine is best for improving hydration and soothing irritated skin. Studies show betaine may help with uneven skin tones.

Betaine is naturally created in the skin and body. The form found within cosmetic products can be either plant-dervied or synthetic.

Learn more about Betaine
Emulsifying, Skin Conditioning
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Hydrogenated Lecithin is created from the hydrogenation of lecithin. Hydrogenation is a chemical reaction between molecule hydrogen and another element.

Hydrogenated Lecithin is an emollient and emulsifier. As an emollient, it helps soften skin by trapping moisture within.

The phospholipids in Hydrogenated Lecithin can produce liposomes. Liposomes help other ingredients get through the skin barrier to be better absorbed.

As an emulsifier, it prevents oil and water ingredients from separating.

Learn more about Hydrogenated Lecithin

Ammonium Acryloyldimethyltaurate/Vp Copolymer (let's call it AAVC for short) is a synthetically created polymer. It's used as a film-forming agent and used to thicken the consistency of products.

AAVC is able to increase the consistency and viscosity of products due to its large molecule size. It also prevents ingredients from separating.

Humectant, Masking, Skin Conditioning
Mixed

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

  • It is a solvent, meaning that it helps to dissolve other ingredients. This also enhances the absorption of the product into one's skin.
  • It is a humectant, which means that it helps attract moisture into the skin.
  • It helps improve product application.

Overall, Butylene Glycol is a safe and well-rounded ingredient. It is unlikely to irritate skin, and works well with pretty much all other ingredients.

Skin Conditioning
Mixed

Ethylhexylglycerin (we can't pronounce this either) is commonly used as a preservative and skin softener. It is derived from glyceryl.

You might see Ethylhexylglycerin often paired with other preservatives such as phenoxyethanol. Ethylhexylglycerin has been found to increase the effectiveness of these other preservatives.

Skin Conditioning
Loved

Adenosine is in every living organism. It is one of four components in nucleic acids that helps store our DNA.

Adenosine has many benefits when used. These benefits include hydrating the skin, smoothing skin, and reducing wrinkles. Once applied, adenosine increases collagen production. It also helps with improving firmness and tissue repair.

Studies have found adenosine may also help with wound healing.

In skincare products, Adenosine is usually derived from yeast.

Learn more about Adenosine
Disliked

Disodium EDTA plays a role in making products more stable by aiding other preservatives.

It is a chelating agent, meaning it neutralizes metal ions that may be found in a product.

Disodium EDTA is a salt of edetic acid and is found to be safe in cosmetic ingredients.

Learn more about Disodium EDTA
Emollient, Humectant, Skin Conditioning
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Caprylyl Glycol is a humectant and emollient, meaning it attracts and preserves moisture.

It is a common ingredient in many products, especially those designed to hydrate skin. The primary benefits are retaining moisture, skin softening, and promoting a healthy skin barrier.

Though Caprylyl Glycol is an alcohol derived from fatty acids, it is not the kind that can dry out skin.

This ingredient is also used as a preservative to extend the life of products. It has slight antimicrobial properties.

Learn more about Caprylyl Glycol

Ingredient Ratings

Here's what our community thinks of the ingredients in these products.

The 6 Peptide Skin Booster Serum
27
6
9
2
liked
mixed
disliked
not rated
Peptide 9 Volume All In One Essence
32
16
22
14
liked
mixed
disliked
not rated

When to use

417 Routines
48% use in am
52% use in pm
96% use every day
When to use See routines that use it ->
6 Routines
67% use in am
33% use in pm
83% use every day

Reviews

Here's what our community thinks

COSRX The 6 Peptide Skin Booster Serum 44 ingredients

3.3 /5
from 6 ratings
Light (3) Doesn't Work (2) Absorbs Well (2)
KatarzynaK's avatar

KatarzynaK

5 days ago · Combination Skin
Review

I was breaking out for 3 months and had no idea what was going on. Then my mom mentioned she’s getting small bumps around her jawline from another...

I was breaking out for 3 months and had no idea what was going on. Then my mom mentioned she’s getting small bumps around her jawline from another peptide serum (Skin1004) and it clicked. Stopped using it week ago and didn’t get a single pimple.
Didn’t see any positive results.

NemZee's avatar

NemZee

27 days ago · Normal Skin
Review

MEDI-PEEL Peptide 9 Volume All In One Essence 84 ingredients

5.0 /5
from 1 rating
Great Value (1) Hydrating (1) Light Scent (1)
pamsipam's avatar

Plamena Mihaylova

2 months ago · Oily Skin
Review

Switched up my routine a bit because this essence has all the ingredients I tried to combine. It feels great, leaves the skin shiny/glowy and...

Switched up my routine a bit because this essence has all the ingredients I tried to combine. It feels great, leaves the skin shiny/glowy and creates a protective barrier that keeps gunk away.