Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Paula's Choice Resist Super-Light Wrinkle Defense SPF 30 Versus La Roche-Posay Effaclar Duo [+] SPF 30

Paula's Choice Resist Super-Light Wrinkle Defense SPF 30 Versus La Roche-Posay Effaclar Duo [+] SPF 30 This mineral sunscreen covers the full UV range and blocks ~97% of UVB at SPF 30. This acne day moisturizer is formulated around Niacinamide and Zinc PCA to

Paula's Choice Resist Super-Light Wrinkle Defense SPF 30 Versus La Roche-Posay Effaclar Duo [+] SPF 30

This mineral sunscreen covers the full UV range and blocks ~97% of UVB at SPF 30.

This acne day moisturizer is formulated around Niacinamide and Zinc PCA to clear breakouts and balance excess oil.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Cyclopentasiloxane

Zinc Oxide

PEG-12 Dimethicone

PEG/PPG-18/18 Dimethicone

Lauroyl Lysine

Sodium Chloride

Trihydroxystearin

Dimethicone Crosspolymer

Resveratrol

Quercetin

Epigallocatechin Gallate

Tocopheryl Acetate

Tetrahexyldecyl Ascorbate

Adenosine

Bisabolol

Salix Nigra Bark Extract

Punica Granatum Extract

Haematococcus Pluvialis Extract

Hydrolyzed Corn Starch

Polysorbate 80

Hydrated Silica

Triethoxycaprylylsilane

C12-15 Alkyl Benzoate

Isopropyl Titanium Triisostearate

Caprylyl Glycol

Hexylene Glycol

Ethylhexylglycerin

Iron Oxides

Phenoxyethanol

Water, Cyclopentasiloxane, Zinc Oxide, PEG-12 Dimethicone, PEG/PPG-18/18 Dimethicone, Lauroyl Lysine, Sodium Chloride, Trihydroxystearin, Dimethicone Crosspolymer, Resveratrol, Quercetin, Epigallocatechin Gallate, Tocopheryl Acetate, Tetrahexyldecyl Ascorbate, Adenosine, Bisabolol, Salix Nigra Bark Extract, Punica Granatum Extract, Haematococcus Pluvialis Extract, Hydrolyzed Corn Starch, Polysorbate 80, Hydrated Silica, Triethoxycaprylylsilane, C12-15 Alkyl Benzoate, Isopropyl Titanium Triisostearate, Caprylyl Glycol, Hexylene Glycol, Ethylhexylglycerin, Iron Oxides, Phenoxyethanol

Octocrylene

Glycerin

Homosalate

Ethylhexyl Salicylate

Alcohol Denat.

Niacinamide

Butyl Methoxydibenzoylmethane

Dimethicone

Sorbitan Stearate

Silica

Isopropyl Lauroyl Sarcosinate

Styrene/Acrylates Copolymer

Propylene Glycol

Potassium Cetyl Phosphate

Diisopropyl Sebacate

PEG-20

PEG-8 Laurate

Zinc PCA

Dimethicone/Vinyl Dimethicone Crosspolymer

2-Oleamido-1,3-Octadecanediol

Inulin Lauryl Carbamate

Carnosine

Poloxamer 338

Ammonium Polyacryloyldimethyl Taurate

Disodium EDTA

Sucrose Cocoate

Capryloyl Salicylic Acid

Xanthan Gum

T-Butyl Alcohol

BHT

Salicylic Acid

Parfum

Water, Octocrylene, Glycerin, Homosalate, Ethylhexyl Salicylate, Alcohol Denat., Niacinamide, Butyl Methoxydibenzoylmethane, Dimethicone, Sorbitan Stearate, Silica, Isopropyl Lauroyl Sarcosinate, Styrene/Acrylates Copolymer, Propylene Glycol, Potassium Cetyl Phosphate, Diisopropyl Sebacate, PEG-20, PEG-8 Laurate, Zinc PCA, Dimethicone/Vinyl Dimethicone Crosspolymer, 2-Oleamido-1,3-Octadecanediol, Inulin Lauryl Carbamate, Carnosine, Poloxamer 338, Ammonium Polyacryloyldimethyl Taurate, Disodium EDTA, Sucrose Cocoate, Capryloyl Salicylic Acid, Xanthan Gum, T-Butyl Alcohol, BHT, Salicylic Acid, Parfum

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. 03Caprylyl Glycol is a humectant, skin conditioner, emollient, and preservative booster derived from either caprylic acid or synthetically created.
  4. 04Typical use levels vary from 0.3-1% as a preservative booster and go up to 2% to condition skin.
  5. 05Because it is not a free-fatty acid, this ingredient is fungal acne safe (there's nothing for Malassezia to feed on).
  6. 06Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:
  7. 07The CIR Expert Panel found minimal skin absorption or sensitization of any kind in a safety assessment. Though this ingredient is considered well-tolerated, a small number of cases of allergic dermatitis have been published since 2002. Just be sure …
  8. 08Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.
  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. 16Glycine Soja Sterols are plant-derived fatty alcohols (phytosterols) from soybean.
  17. 17You can think of them like the plant world's version of cholesterol; they're structurally similar enough to slot into your skin's lipid barrier and help it do its job.
  18. 18Phytosterols aid skin barrier recovery by traveling deeper into the skin rather than just sitting on top of it. Once inside, they reduce transepidermal water loss (TEWL) and keep skin feeling soft / supple.
  19. 19Research on phytosterols in keratinocyte and macrophase models has shown meaningful inhibition of pro-inflammatory mediators. This supports their reputation as a calming ingredient for reactive or sensitive skin.
  20. 20Subjects with soy allergies did not show a reaction to phytosterols in safety tests, but it wouldn't hurt to patch test if you do have a soy allergy.
Source · skinsort.com
02

Product index

Related product references

03

Comparison edit

Read side by side