Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

The INKEY List Omega Water Cream Versus Paula's Choice Water-Infusing Electrolyte Moisturizer

The INKEY List Omega Water Cream Versus Paula's Choice Water-Infusing Electrolyte Moisturizer This barrier-repair moisturizer is formulated around Niacinamide to strengthen the skin barrier and balance excess oil. This moisturizer is formulated around Potassiu

The INKEY List Omega Water Cream Versus Paula's Choice Water-Infusing Electrolyte Moisturizer

This barrier-repair moisturizer is formulated around Niacinamide to strengthen the skin barrier and balance excess oil.

This moisturizer is formulated around Potassium PCA and Magnesium PCA to hydrate skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dicaprylyl Carbonate

Glycerin

Niacinamide

Propanediol

Betaine

Polyglyceryl-4 Isostearate

Coco-Caprylate/Caprate

Magnesium Sulfate

Glycosphingolipids

Glycolipids

Sodium Benzoate

Disteardimonium Hectorite

Oleic Acid

Potassium Sorbate

Citric Acid

Polyglycerin-3

Water, Dicaprylyl Carbonate, Glycerin, Niacinamide, Propanediol, Betaine, Polyglyceryl-4 Isostearate, Coco-Caprylate/Caprate, Magnesium Sulfate, Glycosphingolipids, Glycolipids, Sodium Benzoate, Disteardimonium Hectorite, Oleic Acid, Potassium Sorbate, Citric Acid, Polyglycerin-3

Dimethicone

Butylene Glycol

Stearic Acid

Glyceryl Stearate

Isohexadecane

Potassium PCA

Magnesium PCA

Calcium PCA

Ethylhexyl Olivate

Polyglyceryl-4 Olivate

Pyrus Malus Fruit Extract

Laminaria Saccharina Extract

Actinidia Chinensis Fruit Extract

Coffea Arabica Seed Extract

Biotin/Folic Acid/Cyanocobalamin/Niacinamide/Pantothenic Acid/Pyridoxine/Riboflavin/Thiamine/Yeast Polypeptides

Garcinia Mangostana Peel Extract

Prunus Serotina Fruit Extract

Squalane

Ceramide EOP

Ceramide AP

Ceramide NP

Pisum Sativum Extract

Phytosphingosine

Cholesterol

Acetyl Hexapeptide-37

Oryza Sativa Bran Extract

Tocopherol

Creatine

Bisabolol

Sorbitol

Inositol

Xylitol

Caprylic/Capric Triglyceride

Sodium Levulinate

Behenyl Behenate

Tribehenin

Sodium Lauroyl Lactylate

Xanthan Gum

Sodium Acrylates Copolymer

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Carbomer

Sodium Hydroxide

Tetrasodium EDTA

Phenoxyethanol

Ethylhexylglycerin

Water, Glycerin, Dimethicone, Butylene Glycol, Propanediol, Stearic Acid, Glyceryl Stearate, Isohexadecane, Potassium PCA, Magnesium PCA, Calcium PCA, Ethylhexyl Olivate, Polyglyceryl-4 Olivate, Pyrus Malus Fruit Extract, Laminaria Saccharina Extract, Actinidia Chinensis Fruit Extract, Coffea Arabica Seed Extract, Biotin/Folic Acid/Cyanocobalamin/Niacinamide/Pantothenic Acid/Pyridoxine/Riboflavin/Thiamine/Yeast Polypeptides, Garcinia Mangostana Peel Extract, Prunus Serotina Fruit Extract, Squalane, Ceramide EOP, Ceramide AP, Ceramide NP, Pisum Sativum Extract, Phytosphingosine, Cholesterol, Acetyl Hexapeptide-37, Oryza Sativa Bran Extract, Tocopherol, Creatine, Bisabolol, Sorbitol, Inositol, Xylitol, Caprylic/Capric Triglyceride, Sodium Levulinate, Behenyl Behenate, Tribehenin, Sodium Lauroyl Lactylate, Xanthan Gum, Sodium Acrylates Copolymer, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Carbomer, Sodium Hydroxide, Tetrasodium EDTA, Phenoxyethanol, Ethylhexylglycerin

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.

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.

Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.

It’s often used to:

Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.

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. 03Glycolic Acid is arguably the most famous alpha hydroxy acid (AHA) with tons of research backing its benefits.
  4. 04It is found naturally in sugar cane but the form used in skincare is usually synthetic for purity and stability.
  5. 05Glycolic acid removes the top layer of dead skin cells to allow newer and fresher ones to emerge.
  6. 06AHAs work by breaking down the structural “glue” that holds old skin cells in place. When that buildup is gone, your skin can renew itself more efficiently.
  7. 07Research also shows glycolic acid stimulates collagen production, helping to firm and thicken the skin over time. This is one of its biggest advantages over other AHAs.
  8. 08Overall, glycolic acid helps with:
  9. 09Fun fact: Glycolic acid boosts skin hydration by helping it produce molecules that increase hyaluronic acid naturally.
  10. 10To work best, glycolic acid products should have a pH between 3-4 (that’s where exfoliation is most effective but still gentle on skin).
  11. 11The pH and concentration of a product are key to its effectiveness:
  12. 12It is normal to feel a slight stinging sensation when using glycolic acid. This usually fades as your skin adjusts.
  13. 13Because glycolic acid has the smallest molecular size in the AHA family, it can penetrate deeper, which enhances its effectiveness but also makes it more likely to irritate sensitive skin.
  14. 14If your skin is very sensitive or prone to rosacea, glycolic acid may be too strong; in that case, try milder options like lactic acid or a PHA instead.
  15. 15Recent studies suggest glycolic acid might even help protect against UV damage. But don’t skip sunscreen! Freshly exfoliated skin is more sensitive to the sun.
  16. 16Glycolic acid is a skincare superstar. It smooths, brightens, hydrates, and firms the skin. Unless you’re highly sensitive, it’s well worth adding to your routine.
  17. 17Read more about some other popular AHA's here:
  18. 18Propanediol is an all-star ingredient. It softens, hydrates, and smooths the skin.
  19. 19It’s often used to:
  20. 20Propanediol is not likely to cause sensitivity and considered safe to use. It is derived from corn or petroleum with a clear color and no scent.
Source · skinsort.com
02

Product index

Related product references

Product

The Inkey List Glucoside Serum

The Inkey List Glucoside Serum The Inkey List Glucoside Serum ingredients explained: Aqua, Glycerin, Sodium Carbomer, Benzyl Alcohol, Phenoxyethanol, Citric Acid, Tocopheryl Acetate, Dehydr…

Source: incidecoder.comView reference →
03

Comparison edit

Read side by side