Muji Booster Serum Versus COSRX The 6 Peptide Skin Booster Serum
Updated on June 28, 2024
Overview
What they are
These products are both reef safe serums. They have a total of 10 ingredients in common
Cool Features
They both contain hyaluronic acid
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, scar healing and dark spots
Free From
They both do not contain any common allergens, parabens, silicones 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
Muji Booster Serum 26 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
What's inside
What's inside
At a glance
Click on any of the items below to learn more
Muji Booster Serum 26 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Rice Ferment Filtrate
Skin Conditioning
Glycerin
Humectant
Butylene Glycol
Humectant
Propanediol
Solvent
Pentylene Glycol
Skin ConditioningPEG/PPG/Polybutylene Glycol-8/5/3 Glycerin
HumectantCeramide NP
Skin Conditioning
Alanine
MaskingArginine
Masking
Sodium Glutamate
MaskingSerine
Masking
Proline
Skin ConditioningHydrolyzed Hyaluronic Acid
Humectant
Yeast Extract
Skin Conditioning
Dipotassium Glycyrrhizate
Humectant
Diglycerin
Humectant
Ethylhexylglycerin
Skin ConditioningOryza Sativa Bran Oil
Emollient
Oleyl Alcohol
Emollient
Polysorbate 80
Emulsifying
PPG-7-Buteth-10
Skin ConditioningPPG-20 Methyl Glucose Ether
Skin ConditioningPEG-60 Hydrogenated Castor Oil
Emulsifying
Xanthan Gum
EmulsifyingCitric Acid
Buffering
Sodium Citrate
BufferingRice Ferment Filtrate, Glycerin, Butylene Glycol, Propanediol, Pentylene Glycol, PEG/PPG/Polybutylene Glycol-8/5/3 Glycerin, Ceramide NP, Alanine, Arginine, Sodium Glutamate, Serine, Proline, Hydrolyzed Hyaluronic Acid, Yeast Extract, Dipotassium Glycyrrhizate, Diglycerin, Ethylhexylglycerin, Oryza Sativa Bran Oil, Oleyl Alcohol, Polysorbate 80, PPG-7-Buteth-10, PPG-20 Methyl Glucose Ether, PEG-60 Hydrogenated Castor Oil, Xanthan Gum, Citric Acid, Sodium Citrate
Water
Skin ConditioningDipropylene Glycol
HumectantGlycerin
Humectant
Pentylene Glycol
Skin Conditioning1,2-Hexanediol
Skin Conditioning
Niacinamide
Smoothing
Acetyl Hexapeptide-8
Humectant
Copper Tripeptide-1
Skin Conditioning
Sh-Polypeptide-121
Skin Conditioning
Dipeptide Diaminobutyroyl Benzylamide Diacetate
Skin Conditioning
Oligopeptide-68
Bleaching
Palmitoyl Tripeptide-8
Skin Conditioning
Allantoin
Skin Conditioning
Sodium Hyaluronate
Humectant
Acetyl Glucosamine
Skin ConditioningSerine
Masking
Alanine
MaskingGlycine
Buffering
Threonine
Arginine
Masking
Proline
Skin ConditioningBetaine
Humectant
Sodium PCA
Humectant
Sodium Lactate
BufferingPCA
Humectant
Glutamic Acid
Humectant
Lysine Hcl
Skin Conditioning
Tocopherol
Antioxidant
Dextran
Glycine Soja Oil
Emollient
Hydrogenated Lecithin
Emulsifying
Ammonium Acryloyldimethyltaurate/Vp Copolymer
Polyacrylate Crosspolymer-6
Emulsion StabilisingButylene Glycol
Humectant
Xanthan Gum
EmulsifyingEthylhexylglycerin
Skin ConditioningAdenosine
Skin Conditioning
Polyquaternium-51
Skin Conditioning
Disodium EDTA
Citric Acid
Buffering
Caprylyl Glycol
Emollient
T-Butyl Alcohol
Perfuming
Potassium Sorbate
Preservative
Sodium Oleate
CleansingWater, Dipropylene Glycol, Glycerin, Pentylene Glycol, 1,2-Hexanediol, Niacinamide, Acetyl Hexapeptide-8, Copper Tripeptide-1, Sh-Polypeptide-121, Dipeptide Diaminobutyroyl Benzylamide Diacetate, Oligopeptide-68, Palmitoyl Tripeptide-8, Allantoin, Sodium Hyaluronate, Acetyl Glucosamine, Serine, Alanine, Glycine, Threonine, Arginine, Proline, Betaine, Sodium PCA, Sodium Lactate, PCA, Glutamic Acid, Lysine Hcl, Tocopherol, Dextran, Glycine Soja Oil, Hydrogenated Lecithin, Ammonium Acryloyldimethyltaurate/Vp Copolymer, Polyacrylate Crosspolymer-6, Butylene Glycol, Xanthan Gum, Ethylhexylglycerin, Adenosine, Polyquaternium-51, Disodium EDTA, Citric Acid, Caprylyl Glycol, T-Butyl Alcohol, Potassium Sorbate, Sodium Oleate
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
Alanine is an amino acid and is already found in the human body. Our skin uses alanine to build collagen, elastin, and keratin.
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 ArginineButylene Glycol (or BG) is used within cosmetic products for a few different reasons:
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
Though this ingredient works well with most skin types, some people with sensitive skin may experience a reaction such as allergic rashes, closed comedones, or itchiness.
Learn more about Butylene GlycolCitric Acid is an AHA derived from citrus fruits (think oranges, lemons, and limes!).
As an AHA, Citric Acid removes the top layer of skin cells from the newer layer of skin underneath. This helps skin to remove dark spots and even out skin tone.
If you spot Citric Acid near the end of an ingredient list, it's likely there as a pH adjuster rather than an active ingredient.
Read more about some other popular AHA's here:
Learn more about Citric AcidEthylhexylglycerin (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.
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 GlycerinPentylene 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 also help thicken or stabilize a product.
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 GlycolProline is an amino-acid. It helps moisturize the skin and plays an important role in creating proteins.
Our skin uses proline as one of the building blocks for producing collagen.
In medicine, proline is used as an osmoprotectant. This means it helps prevent oxidative degradation in other drugs.
Our bodies are able to produce proline naturally, but certain conditions may inhibit this production. In that case, proline can be obtained from eating egg whites, soy protein, dairy products, asparagus, mushrooms, and seaweed.
Learn more about ProlineSerine is an amino acid naturally found in our body. Our bodies use amino acids to create protein.
Amino-acids help give keep our skin hydrated. They play an important role in the skin barrier, which keeps the skin plump and firm.
Serine is a non-essential amino acid, meaning we don't need to obtain it from eating foods.
Learn more about SerineXanthan 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.
On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.
Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.
Learn more about Xanthan GumIngredient Ratings
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When to use
Muji Booster Serum 26 ingredients
COSRX The 6 Peptide Skin Booster Serum 44 ingredients
Reviews
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