The INKEY List Polyglutamic Acid Hydrating Serum

The INKEY List Polyglutamic Acid Hydrating Serum
5.1
/ 10
Moisturizing
7.2 Humectancy icon Humectancy
3.0 Occlusivity icon Occlusivity

Review

Results you may expect from using The INKEY List Polyglutamic Acid Hydrating Serum:

Based on the ingredient analysis by CreamScan, these are the key benefits you can expect from using The INKEY List Polyglutamic Acid Hydrating Serum:

  • Moderate moisturizing. It has a moisturizing rating of 5.1 out of 10.

How moisturizing is it?

Quite moisturizing: The INKEY List Polyglutamic Acid Hydrating Serum has a moisturizing rating of 5.1 out of 10.

Is it more humectant or occlusive? Rather humectant. It has a high humectancy of 7.2 out of 10, primarily due to the substantial concentration of Butylene Glycol (est. ≈4.0%) and Glycerin (est. ≈2.0%), and a moderate occlusivity of 3.0 out of 10, solely because of the significant content of Dimethicone (est. ≈6.0%).

Please refer to the Ratings section below for details of the moisturizing rating calculation.

Ingredients

Est. % Ingredient Origin Functions
75
Water
6
Dimethicone
4
Butylene Glycol
3
Bis-PEG-12 Dimethicone
2
Glycerin
1.5
Polymethylsilsesquioxane
1.3
Polysilicone-11
1
Phenoxyethanol
0.3
Polyglutamic Acid
0.3
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
0.3
Isohexadecane
0.3
Propanediol
0.3
Coco-Glucoside
0.3
Sodium Benzoate
0.3
Hydroxyethylcellulose
0.3
Polysorbate 80
0.3
Ethylhexylglycerin
0.3
Potassium Sorbate
0.3
Decyl Glucoside
0.3
Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer
0.3
Sorbitan Oleate
0.3
Trisodium Ethylenediamine Disuccinate
0.3
Caprylyl Glycol
0.3
Hexylene Glycol
0.3
Oryza Sativa (Rice) Bran Extract
Est. %
Water
Function:
Origin:
Dimethicone
Function:
Origin:
Butylene Glycol
Function:
Origin:
Bis-PEG-12 Dimethicone
Function:
Origin:
Glycerin
Function:
Origin:
Polymethylsilsesquioxane
Function:
Origin:
Polysilicone-11
Function:
Origin:
Phenoxyethanol
Function:
Origin:
Polyglutamic Acid
Function:
Origin:
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Function:
Origin:
Isohexadecane
Function:
Origin:
Propanediol
Function:
Origin:
Coco-Glucoside
Function:
Origin:
Sodium Benzoate
Function:
Origin:
Hydroxyethylcellulose
Function:
Origin:
Polysorbate 80
Function:
Origin:
Ethylhexylglycerin
Function:
Origin:
Potassium Sorbate
Function:
Origin:
Decyl Glucoside
Function:
Origin:
Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer
Function:
Origin:
Sorbitan Oleate
Function:
Origin:
Trisodium Ethylenediamine Disuccinate
Function:
Origin:
Caprylyl Glycol
Function:
Origin:
Hexylene Glycol
Function:
Origin:
Oryza Sativa (Rice) Bran Extract
Function:
Origin:

Ratings

All humectants
7.2
4
2
0.3
0.3
0.3
0.3
Benchmark
10
All occlusives
6.0
6.0
Benchmark
20
Moisturizing rating
5.1
Ingredient Est. % Benchmark Raiting
Humectancy All humectants 7.2 10
7.2
4
2
0.3
0.3
0.3
0.3
Occlusivity All occlusives 6.0 20
3.0
6.0
Moisturizing rating
5.1
Ingredient Est. % Benchmark Humectancy
4
2
0.3
0.3
0.3
0.3
All humectants 7.2 10
7.2
All humectants
7.2
4
2
0.3
0.3
0.3
0.3
Benchmark
10
Ingredient Est. % Benchmark Occlusivity
6
All occlusives 6.0 20
3.0
All occlusives
6.0
6.0
Benchmark
20
Ingredient
Ingredient anti-wrinkle power
when present at, %
in this formula est. %
Rating
None
Total
0
None
Anti-wrinkle rating
0
Ingredient Est. % Benchmark
Rich in Antioxidants
None
All antioxidants 0 3 No
All antioxidants
0
None
Benchmark
3
Ingredient Est. % Benchmark
Rich in Soothing
None
All soothing 0 5 No
All soothing
0
None
Benchmark
5

Ingredients explained

Water
Est. %75
Function
Origin
WaterThe most used ingredient in skincare. Its concentration defines the product texture: rich creams may have about 50% of water while a light jelly about 90%. Water doesn’t moisturize the skin by itself and is used in skincare as a solvent for other ingredients.
Dimethicone
Est. %6
Function
Origin
DimethiconeThe most common silicone in skincare. It forms a silky, smooth film on the skin’s surface and can help to prevent water loss. It also aids in wound healing and can treat and soften scars. Dimethicone is considered to be very safe for use.
Butylene Glycol
Est. %4
Function
Origin
Butylene GlycolA clear, colorless liquid humectant that draws moisture to the skin. The humectancy of butylene glycol, owed to its two hydroxyl groups, is quite considerable, although not as powerful as glycerin, which contains three hydroxyl groups.
Bis-PEG-12 Dimethicone
Est. %3
Function
Origin
Bis-PEG-12 DimethiconeDescription is coming soon
Glycerin
Est. %2
Function
Origin
Glycerin

The most popular moisturizing ingredient in the world. It is a powerful humectant – cheap yet very effective.

Polymethylsilsesquioxane
Est. %1.5
Function
Origin
PolymethylsilsesquioxaneA type of spherical powder that functions on a ball-bearing effect in which the tiny microspheres roll around on the skin and create lubricity. Polymethylsilsesquioxane offers extra slip to skincare products and makes the skin feel soft and smooth.
Polysilicone-11
Est. %1.3
Function
Origin
Polysilicone-11A synthetic rubber-like substance of the silicone family that has no color or distinct scent. These are large molecules that cannot penetrate the skin but instead create a thin silky film on the skin's surface.
Phenoxyethanol
Est. %1
Function
Origin
PhenoxyethanolThe most frequently used preservative in skincare. It is a clear, oil-like liquid synthetic substance that protects products from harmful bacteria and yeast, whilst still leaving skin microflora unharmed. It is confirmed by research to be harmless.
Polyglutamic Acid
Est. %0.3
Function
Origin
Polyglutamic AcidA natural polymer with incredible water-binding properties that is prepared from glutamic acid through fermentation.
Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer
Est. %0.3
Function
Origin
Sodium Acrylate/Sodium Acryloyldimethyl Taurate CopolymerA multi-functional ingredient that forms a polymeric network, thereby thickening the formula and preventing other ingredients from shifting around.
Isohexadecane
Est. %0.3
Function
Origin
IsohexadecaneA clear, colorless liquid that is commonly used as an emollient. It is made up of pure hydrocarbons and leaves a dry feeling on the skin upon application. It also increases the spreadability of a product.
Propanediol
Est. %0.3
Function
Origin
PropanediolAn excellent solvent capable of mixing water with normally water-insoluble ingredients. It also functions as a humectant due to its water-loving alcohol groups. Propanediol can control the viscosity of a product by reducing its thickness.
Coco-Glucoside
Est. %0.3
Function
Origin
Coco-GlucosideA mild cleansing and foaming agent. It can be used on its own as a gentle cleanser in a skin cleansing product or can be combined with more powerful cleansing agents, called anionic surfactants, to make them milder on the skin.
Sodium Benzoate
Est. %0.3
Function
Origin
Sodium BenzoateA preservative that usually works in combination with other preservatives. It has to be at low pH (<5.5) to be effective.
Hydroxyethylcellulose
Est. %0.3
Function
Origin
HydroxyethylcelluloseA naturally-derived thickener that can form clear gel textures without the slimy feeling, unlike some other natural gel-formers.
Polysorbate 80
Est. %0.3
Function
Origin
Polysorbate 80A non-ionic surfactant, which means that it contains no chemical charges. It can be used as a mild cleansing agent in skin cleansing products but is more commonly used for its emulsifying abilities.
Ethylhexylglycerin
Est. %0.3
Function
Origin
EthylhexylglycerinA preservative booster derived from glycerin. It is commonly paired with other preservatives to improve their efficacy. Ethylhexylglycerin is also a humectant due to its chemical base of glycerin.
Potassium Sorbate
Est. %0.3
Function
Origin
Potassium SorbateA preservative widely used in food and personal care products, available from natural sources or synthetically produced. Potassium sorbate works by inhibiting the growth of yeasts, molds, and some bacteria.
Decyl Glucoside
Est. %0.3
Function
Origin
Decyl GlucosideA surfactant that can function as both a cleansing agent and emulsifier. As a cleansing agent, it is very mild on the skin. As an emulsifier, decyl glucoside will produce oil-in-water emulsions. It is naturally derived from vegetable oils and starch.
Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer
Est. %0.3
Function
Origin
Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate CopolymerDescription is coming soon
Sorbitan Oleate
Est. %0.3
Function
Origin
Sorbitan OleateA vegetable-based ingredient that stabilizes mixtures of oil and water. Sorbitan oleate serves primarily as an emulsifier that produces water-in-oil emulsions.
Trisodium Ethylenediamine Disuccinate
Est. %0.3
Function
Origin
Trisodium Ethylenediamine DisuccinateA chelating agent that disables harmful heavy metal ions present in skincare.
Caprylyl Glycol
Est. %0.3
Function
Origin
Caprylyl GlycolAn emollient that improves product spreadability and offers a silky feel on the skin. It also acts as a preservative booster that improves the efficacy of other preservatives. According to the manufacturer, it is also a humectant moisturizer.
Hexylene Glycol
Est. %0.3
Function
Origin
Hexylene GlycolA multifunctional ingredient that is best known for its use as a solvent. It can dissolve both water-based ingredients and oils. For this reason, it can also function as an emulsifier, allowing oil and water ingredients to mix and remain stable.
Oryza Sativa (Rice) Bran Extract
Est. %0.3
Function
Origin
Oryza Sativa (Rice) Bran ExtractAn extract from rice bran, the brown outer part of the rice kernel. It contains emollient fatty acids and antioxidants such as tocopherols (vitamin E) and γ-oryzanol.