Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Sunday Riley Good Genes Glycolic Acid Treatment Versus Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant

Sunday Riley Good Genes Glycolic Acid Treatment Versus Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant This smoothing treatment is formulated around Glycolic Acid and Squalane to refine skin texture and brighten dull-looking skin. This smoothing exfolia

By Peptide Skincare & Beauty Editorial TeamPublished

Sunday Riley Good Genes Glycolic Acid Treatment Versus Paula's Choice Skin Perfecting 2% BHA Liquid Exfoliant

This smoothing treatment is formulated around Glycolic Acid and Squalane to refine skin texture and brighten dull-looking skin.

This smoothing exfoliator is formulated around Salicylic Acid to refine skin texture and refine the look of pores.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dimethicone

Glycolic Acid

Caprylyl Caprylate/Caprate

PPG-12

Squalane

Propanediol

Cetearyl Alcohol

Potassium Lactate

Bis-Stearyl Dimethicone

Cymbopogon Schoenanthus Oil

Glycerin

Potassium Hydroxide

PPG-24-Glycereth-24

Sodium Phytate

Xanthan Gum

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Glyceryl Stearate

PEG-100 Stearate

Palmitic Acid

Stearic Acid

Phenoxyethanol

Opuntia Ficus-Indica Fruit Extract

Ceteareth-20

Caprylyl Glycol

Chlorphenesin

Saccharomyces Cerevisiae Extract

Sorbitan Isostearate

Potassium Sorbate

Sodium Benzoate

Water, Dimethicone, Glycolic Acid, Caprylyl Caprylate/Caprate, PPG-12, Squalane, Propanediol, Cetearyl Alcohol, Potassium Lactate, Bis-Stearyl Dimethicone, Cymbopogon Schoenanthus Oil, Glycerin, Potassium Hydroxide, PPG-24-Glycereth-24, Sodium Phytate, Xanthan Gum, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Glyceryl Stearate, PEG-100 Stearate, Palmitic Acid, Stearic Acid, Phenoxyethanol, Opuntia Ficus-Indica Fruit Extract, Ceteareth-20, Caprylyl Glycol, Chlorphenesin, Saccharomyces Cerevisiae Extract, Sorbitan Isostearate, Potassium Sorbate, Sodium Benzoate

Methylpropanediol

Butylene Glycol

Salicylic Acid

Polysorbate 20

Camellia Oleifera Leaf

Sodium Hydroxide

Tetrasodium EDTA

Water, Methylpropanediol, Butylene Glycol, Salicylic Acid, Polysorbate 20, Camellia Oleifera Leaf, Sodium Hydroxide, Tetrasodium EDTA

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.

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. 03Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:
  4. 04Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.
  5. 05Though 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.
  6. 06Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
  7. 07Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
  8. 08Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
  9. 09Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  10. 10Topically, glycerin does several things at once:
  11. 11Your 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.
  12. 12Aquaporin-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.
  13. 13This 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.
  14. 14Just know very high concentrations (>40%) can feel tacky in low humidity.
  15. 15Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  16. 16Glyceryl Stearate is made by reacting glycerin with stearic acid (typically sourced from plant oils like palm or coconut). It's an emulsifier, emollient, and mild occlusive.
  17. 17Emulsifiers help ingredients like oil and water stay mixed so your formula stays nicely blended and uniform in texture.
  18. 18This ingredient is typically used in concentrations between 1-10%. Studies have found it to be non-sensitizing, non-phototoxic, and non-photoallergenic.
  19. 19A close cousin of this ingredient is Glyceryl Stearate SE ("self-emulsifying"). This just has a small amount of sodium or potassium stearate added so it can emulsify without a co-emulsifier.
  20. 20Since this ingredient is an ester of a C18 fatty acid, it may not be fungal acne safe. The Malassezia yeast can potentially metabolize within the C11-C24 range.
Source · skinsort.com ⟶
02

Product index

Related product references

03

Comparison edit

Read side by side

Continue reading

Related articles