Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

The INKEY List Salicylic Acid Cleanser Versus Kate Somerville ExfoliKate® Cleanser Daily Foaming Wash

The INKEY List Salicylic Acid Cleanser Versus Kate Somerville ExfoliKate® Cleanser Daily Foaming Wash This salicylic acid gel cleanser is formulated around Salicylic Acid to clear breakouts and unclog pores. This glycolic acid cream cleanser is formulated arou

The INKEY List Salicylic Acid Cleanser Versus Kate Somerville ExfoliKate® Cleanser Daily Foaming Wash

This salicylic acid gel cleanser is formulated around Salicylic Acid to clear breakouts and unclog pores.

This glycolic acid cream cleanser is formulated around Glycolic Acid to exfoliate and smooth skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

Glycerin

Sodium Methyl Cocoyl Taurate

Cocamidopropyl Betaine

PEG-120 Methyl Glucose Dioleate

Salicylic Acid

PEG-150 Pentaerythrityl Tetrastearate

PEG-6 Caprylic/Capric Glycerides

Betaine

Zinc PCA

Phenoxyethanol

Sodium Chloride

Allantoin

Sodium Hydroxide

Coco-Glucoside

Glyceryl Oleate

Benzyl Alcohol

Coconut Acid

Ethylhexylglycerin

Sodium Benzoate

Citric Acid

Dehydroacetic Acid

Trisodium Ethylenediamine Disuccinate

Tocopherol

Hydrogenated Palm Glycerides Citrate

Water, Propanediol, Glycerin, Sodium Methyl Cocoyl Taurate, Cocamidopropyl Betaine, PEG-120 Methyl Glucose Dioleate, Salicylic Acid, PEG-150 Pentaerythrityl Tetrastearate, PEG-6 Caprylic/Capric Glycerides, Betaine, Zinc PCA, Phenoxyethanol, Sodium Chloride, Allantoin, Sodium Hydroxide, Coco-Glucoside, Glyceryl Oleate, Benzyl Alcohol, Coconut Acid, Ethylhexylglycerin, Sodium Benzoate, Citric Acid, Dehydroacetic Acid, Trisodium Ethylenediamine Disuccinate, Tocopherol, Hydrogenated Palm Glycerides Citrate

Stearic Acid

Sodium Cocoyl Glycinate

Lauramidopropyl Betaine

Hydroxypropyl Starch Phosphate

Cetearyl Phosphate

Xylitylglucoside

Dimethicone PEG-8 Meadowfoamate

Anhydroxylitol

Xylitol

Leuconostoc/Radish Root Ferment Filtrate

Bromelain

Papain

Lactobacillus/Pumpkin Fruit Ferment Filtrate

Lauramide Dipa

Aloe Barbadensis Leaf Juice Powder

Lactic Acid

Glycolic Acid

Citrus Aurantium Bergamia Fruit Oil

Aniba Rosaeodora Wood Extract

Citrus Aurantium Dulcis Peel Oil

Glucose

Pelargonium Graveolens Flower Oil

Citral

Benzyl Benzoate

Limonene

Chlorphenesin

Linalool

Citronellol

Maltodextrin

Geraniol

CI 75810

Water, Stearic Acid, Sodium Cocoyl Glycinate, Lauramidopropyl Betaine, Glycerin, Hydroxypropyl Starch Phosphate, Cetearyl Phosphate, Xylitylglucoside, Dimethicone PEG-8 Meadowfoamate, Anhydroxylitol, Xylitol, Leuconostoc/Radish Root Ferment Filtrate, Bromelain, Papain, Lactobacillus/Pumpkin Fruit Ferment Filtrate, Lauramide Dipa, Aloe Barbadensis Leaf Juice Powder, Lactic Acid, Glycolic Acid, Citrus Aurantium Bergamia Fruit Oil, Aniba Rosaeodora Wood Extract, Citrus Aurantium Dulcis Peel Oil, Glucose, Pelargonium Graveolens Flower Oil, Citral, Benzyl Benzoate, Benzyl Alcohol, Sodium Hydroxide, Limonene, Chlorphenesin, Linalool, Citronellol, Maltodextrin, Geraniol, CI 75810

Reviews

Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Benzyl Alcohol is an aromatic alcohol with several roles: it's a preservative, solvent, and mild fragrance component with a floral scent.

This ingredient has been deemed safe for use in cosmetic formulations at concentrations up to 5%, and up to 10% in hair dyes. You'll typically see 0.5-2% in most rinse-off or leave-on products.

As a preservative, it works by disrupting the membrane of microbial proteins. This helps keep bacteria and fungi from growing in your products.

The sensitization picture is actually quite assuring as well:of nearly 71,000 patients patch tested with benzyl alcohol, only 0.21% showed a positive reaction with most of them being weakly positive.

This led researchers to conclude that benzyl alcohol cannot be regarded as a significant contact allergen.

It is worth noting this ingredient is classified as one of the EU's regulated fragrance allergens and restricted to 1% in finished products.

Labels must also declare it in concentrations above 0.001% in leave-on products and 0.01% in rinse-off products.

At concentrations around 5%, localized redness and itching can appear as a direct irritant response and not as a true allergic reaction.

Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.

Topically, glycerin does several things at once:

Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.

Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.

This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.

Just know very high concentrations (>40%) can feel tacky in low humidity.

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

Sodium Hydroxide is also known as lye or caustic soda. It is used to adjust the pH of products; many ingredients require a specific pH to be effective.

In small amounts, sodium hydroxide is considered safe to use. However, large amounts may cause chemical burns due to its high alkaline.

Your skin has a natural pH and acid mantle. This acid mantle helps prevent harmful bacteria from breaking through. The acid mantle also helps keep your skin hydrated.

"Alkaline" refers to a high pH level. A low pH level would be considered acidic.

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. Remember to stay hydrated!

Similar Comparisons

The reference edit

Ingredients, questions
& further reading.

Connected source records selected through this article’s public topic index.

01

Formula cabinet

Ingredients & structured notes

Ingredient index

Ingredients Explained

  1. 01These ingredients are found in both products.
  2. 02Ingredients higher up in an ingredient list are typically present in a larger amount.
  3. 03Dicaprylyl Carbonate comes from carbonic acid and caprylyl alcohol, a fatty alcohol. It is an emollient and gives skin a velvet feel. The sources of Dicaprylyl Carbonate may be synthetic or from animals.
  4. 04As an emollient, Dicaprylyl Carbonate creates a film on the skin. This film traps moisture in, keeping your skin soft and hydrated.
  5. 05Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  6. 06Topically, glycerin does several things at once:
  7. 07Your skin makes glycerin on its own (mostly from sebaceous oil breakdown) and shuttles it to your outermost layer of skin, or your epidermis, via aquaporin-3.
  8. 08Aquaporin-3 is a transporter that is essential for normal skin hydration, elasticity, and repair. Interestingly, mice lacking in AQP3 have dry and less elastic skin that can be fully corrected with glycerin.
  9. 09This ingredient is non-irritating, plays well with almost every ingredient, and works across all skin types. Typical use is anywhere between 3-10% but can go up to 79% in some leave-on products.
  10. 10Just know very high concentrations (>40%) can feel tacky in low humidity.
  11. 11Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  12. 12Water. 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.
  13. 13So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  14. 14You'll also recognize water as that liquid we all need to stay alive. If you see this, drink a glass of water. Remember to stay hydrated!
Source · skinsort.com
02

Product index

Related product references

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Comparison edit

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