Pyunkang Yul Black Tea Boosting Serum Versus Medik8 Liquid Peptides
Overview
What they are
These products are both cruelty-free and reef safe serums. They have a total of 9 ingredients in common
Cool Features
They both contain hyaluronic acid and peptides
Suited For
They're both likely to be good for anti aging, dry skin, brightening skin, sensitive skin, oily skin, reducing pores and scar healing
Free From
They both do not contain any harsh alcohols, common allergens, parabens or sulfates
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
Pyunkang Yul Black Tea Boosting Serum 67 ingredients
Medik8 Liquid Peptides 33 ingredients
About this product
About this product
At a glance
Click on any of the items below to learn more
Pyunkang Yul Black Tea Boosting Serum 67 ingredients
Medik8 Liquid Peptides 33 ingredients
Key Ingredients
Benefits
Concerns
Key Ingredients
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Glycereth-26
HumectantNiacinamide
Smoothing
Sodium Polyacryloyldimethyl Taurate
Emulsion StabilisingCaprylyl Glycol
EmollientDicaprylyl Ether
EmollientAcrylates/C10-30 Alkyl Acrylate Crosspolymer
Emulsion StabilisingDimethicone/Vinyl Dimethicone Crosspolymer
Skin ConditioningHydroxyacetophenone
Antioxidant
Pentylene Glycol
Skin ConditioningTromethamine
BufferingCamellia Sinensis Leaf Extract
Antimicrobial
Dipropylene Glycol
MaskingMaltodextrin
AbsorbentEthylhexylglycerin
Skin ConditioningPolysilicone-15
UV FilterCaramel
Cosmetic ColorantAdenosine
Skin Conditioning
Polyglyceryl-10 Dilaurate
Xanthan Gum
EmulsifyingEclipta Prostrata Extract
Skin ConditioningCoccinia Indica Fruit Extract
Skin ConditioningDisodium EDTA
Silica
Abrasive
Methylpropanediol
SolventPanthenol
Skin Conditioning
Hippophae Rhamnoides Fruit Extract
Skin ConditioningButyrospermum Parkii Butter Extract
Skin Conditioning
Polyglyceryl-10 Myristate
Skin Conditioning
1,2-Hexanediol
Skin ConditioningCaprylic/Capric Triglyceride
MaskingMacadamia Ternifolia Seed Oil
Emollient
Panax Ginseng Berry Extract
Skin ConditioningEthylhexyl Palmitate
Emollient
Cetyl Ethylhexanoate
EmollientPhellodendron Amurense Bark Extract
Skin ConditioningCoptis Japonica Extract
AntimicrobialScutellaria Baicalensis Root Extract
AstringentScrophularia Buergeriana Extract
Skin ConditioningPhytosteryl/Behenyl/Octyldodecyl Lauroyl Glutamate
Skin ConditioningCholesterol
Emollient
Piper Methysticum Root Extract
Skin ConditioningGardenia Florida Fruit Extract
Skin ConditioningBrassica Campestris Sterols
Emollient
Hydrogenated Lecithin
EmulsifyingAcetyl Hexapeptide-8
Humectant
Fructose
HumectantSaccharomyces Ferment Filtrate
HumectantPolyglyceryl-10 Oleate
Skin Conditioning
Sodium Hyaluronate
Humectant
Centella Asiatica Extract
Cleansing
Glucose
HumectantPotassium Cetyl Phosphate
EmulsifyingCeramide NP
Skin Conditioning
Beta-Glucan
Skin Conditioning
Hydrolyzed Hyaluronic Acid
Humectant
Hydroxypropyltrimonium Hyaluronate
Sodium Hyaluronate Crosspolymer
Humectant
Asiatic Acid
Skin ConditioningAsiaticoside
Antioxidant
Sodium Acetylated Hyaluronate
Humectant
Ceramide Ns
Skin Conditioning
Madecassic Acid
Skin Conditioning
Madecassoside
Antioxidant
Ceramide EOP
Skin Conditioning
Water, Glycerin, Butylene Glycol, Glycereth-26, Niacinamide, Sodium Polyacryloyldimethyl Taurate, Caprylyl Glycol, Dicaprylyl Ether, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Dimethicone/Vinyl Dimethicone Crosspolymer, Hydroxyacetophenone, Pentylene Glycol, Tromethamine, Camellia Sinensis Leaf Extract, Dipropylene Glycol, Maltodextrin, Ethylhexylglycerin, Polysilicone-15, Caramel, Adenosine, Polyglyceryl-10 Dilaurate, Xanthan Gum, Eclipta Prostrata Extract, Coccinia Indica Fruit Extract, Disodium EDTA, Silica, Methylpropanediol, Panthenol, Hippophae Rhamnoides Fruit Extract, Butyrospermum Parkii Butter Extract, Polyglyceryl-10 Myristate, 1,2-Hexanediol, Caprylic/Capric Triglyceride, Macadamia Ternifolia Seed Oil, Panax Ginseng Berry Extract, Ethylhexyl Palmitate, Cetyl Ethylhexanoate, Phellodendron Amurense Bark Extract, Coptis Japonica Extract, Scutellaria Baicalensis Root Extract, Scrophularia Buergeriana Extract, Phytosteryl/Behenyl/Octyldodecyl Lauroyl Glutamate, Cholesterol, Piper Methysticum Root Extract, Gardenia Florida Fruit Extract, Brassica Campestris Sterols, Hydrogenated Lecithin, Acetyl Hexapeptide-8, Fructose, Saccharomyces Ferment Filtrate, Polyglyceryl-10 Oleate, Sodium Hyaluronate, Centella Asiatica Extract, Glucose, Potassium Cetyl Phosphate, Ceramide NP, Beta-Glucan, Hydrolyzed Hyaluronic Acid, Hydroxypropyltrimonium Hyaluronate, Sodium Hyaluronate Crosspolymer, Asiatic Acid, Asiaticoside, Sodium Acetylated Hyaluronate, Ceramide Ns, Madecassic Acid, Madecassoside, Ceramide EOP
Water
Skin ConditioningGlycerin
Humectant
Butylene Glycol
Humectant
Inulin
Skin ConditioningSodium Hyaluronate
Humectant
Panthenol
Skin Conditioning
Alpha-Glucan Oligosaccharide
CleansingCarnosine
Skin ConditioningCarbomer
Emulsion StabilisingPolysorbate 20
Emulsifying
Caprylyl Glycol
EmollientPhenoxyethanol
Preservative
Hydroxypropyl Cyclodextrin
MaskingDunaliella Salina Extract
Skin ConditioningEthylhexylglycerin
Skin ConditioningCitric Acid
Buffering
Palmitoyl Tripeptide-5
Skin Conditioning
Sodium Benzoate
Masking
Acetyl Hexapeptide-8
Humectant
Tetrapeptide-21
Skin Conditioning
Pentapeptide-18
Skin Conditioning
Palmitoyl Tripeptide-1
Skin Conditioning
Pantolactone
HumectantPalmitoyl Tripeptide-38
Skin Conditioning
Palmitoyl Tetrapeptide-7
Skin Conditioning
Glyceryl Caprylate
EmollientLactic Acid/Glycolic Acid Copolymer
Skin ConditioningPolyvinyl Alcohol
Phenylpropanol
Masking
Copper Palmitoyl Heptapeptide-14
Skin Conditioning
Heptapeptide-15 Palmitate
Skin Conditioning
Potassium Sorbate
Preservative
Xanthan Gum
EmulsifyingWater, Glycerin, Butylene Glycol, Inulin, Sodium Hyaluronate, Panthenol, Alpha-Glucan Oligosaccharide, Carnosine, Carbomer, Polysorbate 20, Caprylyl Glycol, Phenoxyethanol, Hydroxypropyl Cyclodextrin, Dunaliella Salina Extract, Ethylhexylglycerin, Citric Acid, Palmitoyl Tripeptide-5, Sodium Benzoate, Acetyl Hexapeptide-8, Tetrapeptide-21, Pentapeptide-18, Palmitoyl Tripeptide-1, Pantolactone, Palmitoyl Tripeptide-38, Palmitoyl Tetrapeptide-7, Glyceryl Caprylate, Lactic Acid/Glycolic Acid Copolymer, Polyvinyl Alcohol, Phenylpropanol, Copper Palmitoyl Heptapeptide-14, Heptapeptide-15 Palmitate, Potassium Sorbate, Xanthan Gum
Ingredients Explained
These ingredients are found in both products.
Ingredients higher up in an ingredient list are typically present in a larger amount.
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 WaterGlycerin 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 GlycerinButylene 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.
- It has mild preservative properties.
Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
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 GlycolEthylhexylglycerin (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.
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.
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 GumPanthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
There are two forms of panthenol: D and L.
D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Panthenol is famous due to its ability to go deeper into the skin's layers. Using this ingredient has numerous pros (and no cons):
Like hyaluronic acid, panthenol is a humectant. Humectants are able to bind and hold large amounts of water to keep skin hydrated.
This ingredient works well for wound healing. It works by increasing tissue in the wound and helps close open wounds.
Once oxidized, panthenol converts to pantothenic acid. Panthothenic acid is found in all living cells.
This ingredient is also referred to as pro-vitamin B5.
Learn more about PanthenolAcetyl 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 slightly. 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.
On the other hand, 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-8Sodium 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 HyaluronateIngredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Pyunkang Yul Black Tea Boosting Serum 67 ingredients
Medik8 Liquid Peptides 33 ingredients
Reviews
Here's what our community thinks
Pyunkang Yul Black Tea Boosting Serum 67 ingredients
Medik8 Liquid Peptides 33 ingredients
It’s water based and firms my skin. My skin loves it. I also like Bare Minerals Herb Serum as it has niacinamide and my skin loves that too. Medik8 Crystal Retinal 3 and 6 also. Elemis pro rad cream wash and dynamic resurf and kefir mist
I love this product. It has become a staple in my routine. It's such a shame they increased the price, but I rotate between this one and the ordinary multipeptide with copper. It's the perfect consistency and it does not get sticky, but it needs to be applied scarcely (around 4 drops). My skin loves this serum and it makes the skin hydrated without creating any excess oil. It does not trigger any Show more
