Primark Skin Polyglutamic Acid Facial Serum Versus The INKEY List Polyglutamic Acid Hydrating Serum
Updated on July 15, 2024
Overview
What they are
These products are both vegan, cruelty-free, and reef safe serums. They have a total of 5 ingredients in common
Suited For
They're both likely to be good for dry skin and scar healing
Free From
They both do not contain any harsh alcohols, common allergens, fragrances, 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
Primark Skin Polyglutamic Acid Facial Serum 12 ingredients
The INKEY List Polyglutamic Acid Hydrating Serum 25 ingredients
What's inside (and what isn't)
What's inside (and what isn't)
At a glance
Click on any of the items below to learn more
Primark Skin Polyglutamic Acid Facial Serum 12 ingredients
The INKEY List Polyglutamic Acid Hydrating Serum 25 ingredients
Key Ingredients
Benefits
Concerns
Benefits
Concerns
Ingredients Side-by-side
Water
Skin ConditioningDimethicone
Emollient
Butylene Glycol
Humectant
Bis-PEG-12 Dimethicone
Emollient
Glycerin
Humectant
Polymethylsilsesquioxane
Polysilicone-11
Phenoxyethanol
Preservative
Polyglutamic Acid
Skin Conditioning
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Emulsion StabilisingIsohexadecane
EmollientPropanediol
Solvent
Coco-Glucoside
CleansingSodium Benzoate
Masking
Hydroxyethylcellulose
Emulsion StabilisingPolysorbate 80
Emulsifying
Ethylhexylglycerin
Skin ConditioningPotassium Sorbate
Preservative
Decyl Glucoside
CleansingDimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer
Skin ConditioningSorbitan Oleate
Emulsifying
Trisodium Ethylenediamine Disuccinate
Caprylyl Glycol
EmollientHexylene Glycol
EmulsifyingOryza Sativa Bran Extract
Skin Conditioning
Water, Dimethicone, Butylene Glycol, Bis-PEG-12 Dimethicone, Glycerin, Polymethylsilsesquioxane, Polysilicone-11, Phenoxyethanol, Polyglutamic Acid, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Propanediol, Coco-Glucoside, Sodium Benzoate, Hydroxyethylcellulose, Polysorbate 80, Ethylhexylglycerin, Potassium Sorbate, Decyl Glucoside, Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer, Sorbitan Oleate, Trisodium Ethylenediamine Disuccinate, Caprylyl Glycol, Hexylene Glycol, Oryza Sativa Bran Extract
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 WaterButylene 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 GlycolPolyglutamic Acid is made up many glutamic acids chained together. It is created from bacterial fermentation.
This ingredient is an effective skin hydrator and may help speed up wound healing. As a humectant, it draws and holds water to the skin. This ingredient is often compared to hyaluronic acid or glycerin. Similarly to hyaluronic acid, it can vary in molecular weights. This means polyglutamic acid is capable of bringing hydration to lower levels of the skin.
Fun fact: Polyglutamic Acid is found in the Japanese food, natto. It is also being used in cancer treatment studies.
Learn more about Polyglutamic AcidPhenoxyethanol 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.
It's often used in formulations along with Caprylyl Glycol to preserve the shelf life of products.
Trisodium Ethylenediamine Disuccinate is used to help stabilize a product.
It is a chelating agent, meaning it helps prevent metal ions from binding to other ingredients. This prevents unwanted reactions in products. Metal ions can come into a product via the water ingredient. They are found in trace amounts and are not known to be harmful.
Ingredient Ratings
Here's what our community thinks of the ingredients in these products.
When to use
Primark Skin Polyglutamic Acid Facial Serum 12 ingredients
The INKEY List Polyglutamic Acid Hydrating Serum 25 ingredients
Reviews
Here's what our community thinks
Primark Skin Polyglutamic Acid Facial Serum 12 ingredients
The INKEY List Polyglutamic Acid Hydrating Serum 25 ingredients
I've been checking out products with Polyglutamic Acid, since it can hold up to four times more moisture than Hyaluronic Acid. The serum smells slightly chemical like many INKEY List products. It is quite good and leaves my dry skin very hydrated and moisturized. Would probably buy it again, if it weren't for the pilling. [Updated: Rating]
I must have after Hyaluronic Acid serum. Just locks everything in. Also a great primer before makeup.
