Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

CeraVe Foaming Facial Cleanser Versus Olay Regenerist Vitamin C + Peptide 24 Brightening Facial Cleanser

CeraVe Foaming Facial Cleanser Versus Olay Regenerist Vitamin C + Peptide 24 Brightening Facial Cleanser This mild gel cleanser is made to cleanse while respecting your skin barrier. This salicylic acid cream cleanser is formulated around Salicylic Acid to cle

CeraVe Foaming Facial Cleanser Versus Olay Regenerist Vitamin C + Peptide 24 Brightening Facial Cleanser

This mild gel cleanser is made to cleanse while respecting your skin barrier.

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

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Cocamidopropyl Hydroxysultaine

Glycerin

Sodium Lauroyl Sarcosinate

PEG-150 Pentaerythrityl Tetrastearate

Niacinamide

PEG-6 Caprylic/Capric Glycerides

Sodium Methyl Cocoyl Taurate

Propylene Glycol

Ceramide NP

Ceramide AP

Ceramide EOP

Carbomer

Methylparaben

Sodium Chloride

Sodium Lauroyl Lactylate

Cholesterol

Disodium EDTA

Propylparaben

Citric Acid

Tetrasodium EDTA

Hydrolyzed Hyaluronic Acid

Phytosphingosine

Xanthan Gum

Water, Cocamidopropyl Hydroxysultaine, Glycerin, Sodium Lauroyl Sarcosinate, PEG-150 Pentaerythrityl Tetrastearate, Niacinamide, PEG-6 Caprylic/Capric Glycerides, Sodium Methyl Cocoyl Taurate, Propylene Glycol, Ceramide NP, Ceramide AP, Ceramide EOP, Carbomer, Methylparaben, Sodium Chloride, Sodium Lauroyl Lactylate, Cholesterol, Disodium EDTA, Propylparaben, Citric Acid, Tetrasodium EDTA, Hydrolyzed Hyaluronic Acid, Phytosphingosine, Xanthan Gum

PPG-15 Stearyl Ether

Stearyl Alcohol

Cetyl Betaine

Hydrated Silica

Salicylic Acid

Distearyldimonium Chloride

Sodium Lauryl Sulfate

3-O-Ethyl Ascorbic Acid

Palmitoyl Pentapeptide-4

PPG-30

Steareth-21

Steareth-2

Cetyl Alcohol

Behenyl Alcohol

Parfum

Ascorbic Acid

Avena Sativa Peptide

Water, PPG-15 Stearyl Ether, Glycerin, Stearyl Alcohol, Cetyl Betaine, Hydrated Silica, Salicylic Acid, Distearyldimonium Chloride, Sodium Lauryl Sulfate, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Niacinamide, PPG-30, Steareth-21, Steareth-2, Cetyl Alcohol, Behenyl Alcohol, Disodium EDTA, Parfum, Ascorbic Acid, Avena Sativa Peptide

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.

Disodium EDTA is a chelating agent. It grabs onto and deactivates metal ions that sneak into your products from water, packaging, or air.

This ingredient mainly works behind the scenes and helps with:

On top of that, this ingredient can counteract the effects of hard water by binding to the minerals in it.

One thing worth knowing is that Disodium EDTA has been shown to be a mild penetration enhancer. It can help other ingredients absorb into skin more effectively which can be a double-edged sword (great for actives, but can also make the active too strong if you have sensitive skin).

Clinical patch testing showed no significant skin irritation at typical use concentrations and minimal dermal absorption.

You'll most likely see this ingredient near the end of an ingredient list. It's typically found in concentrations less than 1%.

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.

Niacinamide is a multitasking form of vitamin B3 that strengthens the skin barrier, reduces pores and dark spots, regulates oil, and improves signs of aging.

And the best part? It's gentle and well-tolerated by most skin types, including sensitive and reactive skin.

You might have heard of "niacin flush", or the reddening of skin that causes itchiness. Niacinamide has not been found to cause this.

In very rare cases, some individuals may not be able to tolerate niacinamide at all or experience an allergic reaction to it.

If you are experiencing flaking, irritation, and dryness with this ingredient, be sure to double check all your products as this ingredient can be found in all categories of skincare.

When incorporating niacinamide into your routine, look out for concentration amounts. Typically, 5% niacinamide provides benefits such as fading dark spots. However, if you have sensitive skin, it is better to begin with a smaller concentration.

When you apply niacinamide to your skin, your body converts it into nicotinamide adenine dinucleotide (NAD). NAD is an essential coenzyme that is already found in your cells as "fuel" and powers countless biological processes.

In your skin, NAD helps repair cell damage, produce new healthy cells, support collagen production, strengthen the skin barrier, and fight environmental stressors (like UV and pollution).

Our natural NAD levels start to decline with age, leading to slower skin repair, visible aging, and a weaker skin barrier. By providing your skin niacinamide, you're recharging your skin's NAD levels. This leads to stronger, healthier, and younger looking skin.

Another name for vitamin B3 is nicotinamide. This vitamin is water-soluble and our bodies don't store it. We obtain Vitamin B3 from either food or skincare. Meat, fish, wheat, yeast, and leafy greens contain vitamin B3.

The type of niacinamide used in skincare is synthetically created.

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!

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The reference edit

Ingredients, questions
& further reading.

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

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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. 033-O-Ethyl Ascorbic Acid is one of the most popular "stable" vitamin C derivatives in skincare.
  4. 04Plain ascorbic acid is fantastic but notoriously fragile; it browns, oxidizes, and loses potency fast. So attaching an ethyl group to the third carbon of the molecule gives it some cool perks:
  5. 05In a formula, it does the 3 classic vitamin C jobs: it acts as an antioxidant, helps brighten skin tone by inhibiting tyrosinase, and supports collagen.
  6. 06The evidence is reasonably solid for a cosmetic ingredient; Liao and colleagues (2018) showed it's significantly more stable than ascorbic acid while still being effective.
  7. 07A 2021 study by Zerbinati and colleagues tested a serum with 30% 3-O-ethyl-l-ascorbic acid and 1% lactic acid significantly increased collagen production, reduced UVB-induced DNA damage, and decreased melanin on a reconstructed pigmented skin model.
  8. 08Typical real world usage sits around 0.5-5% (and 1-2% is common for daily serums).
  9. 09Amounts up to 30% have been shown to be non-irritating on human skin samples, but two isolated cases reported allergic contact dermatitis so a patch test is sensible if you have reactive skin.
  10. 10Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  11. 11Topically, glycerin does several things at once:
  12. 12Your 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.
  13. 13Aquaporin-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.
  14. 14This 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.
  15. 15Just know very high concentrations (>40%) can feel tacky in low humidity.
  16. 16Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  17. 17Water. 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.
  18. 18So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  19. 19You'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
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Product index

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Comparison edit

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