Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Naturium Multi-Peptide Advanced Serum Versus Olay Vitamin C + Peptide 24 MAX Brightening Serum

Naturium Multi-Peptide Advanced Serum Versus Olay Vitamin C + Peptide 24 MAX Brightening Serum This anti-aging serum is formulated around Acetyl Hexapeptide-8 and Ferulic Acid to soften the look of wrinkles. This brightening serum is formulated around Niacinam

Naturium Multi-Peptide Advanced Serum Versus Olay Vitamin C + Peptide 24 MAX Brightening Serum

This anti-aging serum is formulated around Acetyl Hexapeptide-8 and Ferulic Acid to soften the look of wrinkles.

This brightening serum is formulated around Niacinamide and 3-O-Ethyl Ascorbic Acid to brighten dull-looking skin and refine skin texture.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Propanediol

Caprylic/Capric Triglyceride

Isopentyldiol

Ethylhexyl Polyhydroxystearate

Squalane

Tetradecane

Glyceryl Stearate Citrate

Butyrospermum Parkii Butter

Polyglyceryl-3 Stearate

Helianthus Annuus Extract

Oryza Sativa Bran Extract

Mannitol

Phosphatidylcholine

Ferulic Acid

Arginine

Acetyl Hexapeptide-8

Copper Palmitoyl Heptapeptide-14

Palmitoyl Sh-Heptapeptide-12 Sp

Hydrolyzed Collagen

Rosmarinus Officinalis Leaf Extract

Lactic Acid/Glycolic Acid Copolymer

Glycerin

Tocopherol

Pullulan

Lysolecithin

Sclerotium Gum

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Dimethicone

Sodium Phytate

Diglycerin

Hydrogenated Lecithin

Silica

Cetyl Alcohol

Hydroxyacetophenone

Polysorbate 60

Sorbitan Isostearate

Sodium Hydroxide

Sodium Benzoate

Potassium Sorbate

Polyvinyl Alcohol

Decyl Glucoside

Xanthan Gum

Tocopheryl Acetate

Sodium Chloride

Citric Acid

Phenoxyethanol

Water, Propanediol, Caprylic/Capric Triglyceride, Isopentyldiol, Ethylhexyl Polyhydroxystearate, Squalane, Tetradecane, Glyceryl Stearate Citrate, Butyrospermum Parkii Butter, Polyglyceryl-3 Stearate, Helianthus Annuus Extract, Oryza Sativa Bran Extract, Mannitol, Phosphatidylcholine, Ferulic Acid, Arginine, Acetyl Hexapeptide-8, Copper Palmitoyl Heptapeptide-14, Palmitoyl Sh-Heptapeptide-12 Sp, Hydrolyzed Collagen, Rosmarinus Officinalis Leaf Extract, Lactic Acid/Glycolic Acid Copolymer, Glycerin, Tocopherol, Pullulan, Lysolecithin, Sclerotium Gum, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Dimethicone, Sodium Phytate, Diglycerin, Hydrogenated Lecithin, Silica, Cetyl Alcohol, Hydroxyacetophenone, Polysorbate 60, Sorbitan Isostearate, Sodium Hydroxide, Sodium Benzoate, Potassium Sorbate, Polyvinyl Alcohol, Decyl Glucoside, Xanthan Gum, Tocopheryl Acetate, Sodium Chloride, Citric Acid, Phenoxyethanol

Niacinamide

Lactic Acid

Polyacrylate Crosspolymer-6

3-O-Ethyl Ascorbic Acid

Palmitoyl Pentapeptide-4

Palmitoyl Dipeptide-7

Panthenol

Trehalose

PEG-11 Methyl Ether Dimethicone

Sodium Lactate

Parfum

Water, Glycerin, Dimethicone, Niacinamide, Lactic Acid, Polyacrylate Crosspolymer-6, 3-O-Ethyl Ascorbic Acid, Palmitoyl Pentapeptide-4, Palmitoyl Dipeptide-7, Panthenol, Trehalose, PEG-11 Methyl Ether Dimethicone, Sodium Lactate, Sodium Benzoate, Parfum

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Alternatives

Ingredients Explained

These ingredients are found in both products.

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

Dimethicone is a type of synthetic silicone created from natural materials such as quartz. It is also known as polydimethylsiloxane.

What it does:

Dimethicone comes in different viscosities:

Depending on the viscosity, dimethicone has different properties.

Ingredients lists don't always show which type is used, so we recommend reaching out to the brand if you have questions about the viscosity.

This ingredient is unlikely to cause irritation because it does not get absorbed into skin. However, people with silicone allergies should be careful about using this ingredient.

Note: Dimethicone may contribute to pilling. This is because it is not oil or water soluble, so pilling may occur when layered with products. When mixed with heavy oils in a formula, the outcome is also quite greasy.

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 Benzoate is a preservative. It's used in both cosmetic and food products to inhibit the growth of mold and bacteria. It is typically produced synthetically.

Both the US FDA and EU Health Committee have approved the use of sodium benzoate. In the US, levels of 0.1% (of the total product) are allowed.

Sodium benzoate works as a preservative by inhibiting the growth of bacteria inside of cells. It prevents the cell from fermenting a type of sugar using an enzyme called phosphofructokinase.

It is the salt of benzoic acid. Foods containing sodium benzoate include soda, salad dressings, condiments, fruit juices, wines, and snack foods.

Studies for using ascorbic acid and sodium benzoate in cosmetics are lacking, especially in skincare routines with multiple steps.

We always recommend speaking with a professional, such as a dermatologist, if you have any concerns.

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.

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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. 03Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  4. 04Topically, glycerin does several things at once:
  5. 05Your 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.
  6. 06Aquaporin-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.
  7. 07This 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.
  8. 08Just know very high concentrations (>40%) can feel tacky in low humidity.
  9. 09Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  10. 10Phenoxyethanol is one of the most widely used preservatives in skincare (and for good reason!).
  11. 11It has a large spectrum of antimicrobial activity and especially effective bacteria, yeast, and mold while only having a weak effect on your skin's natural microbiome.
  12. 12On a cellular level, it disrupts the cell membranes of microbes by poking holes that make the cell leak. This shuts down the chemical reactions the microbe needs to make energy so it can no longer survive.
  13. 13Another perk of this ingredient is that it stays functional across a wide pH range (3-10).
  14. 14You'll often see it paired with boosters like Ethylhexylglycerin; one study showed that a 1:9 ratio of Ethylhexylglycerin to Phenoxyethanol damages bacterial membranes as effectively as doubling the Phenoxyethanol concentration on its own.
  15. 15Typical use concentrations range from 0.3-1% depending on the formula, and this ingredient is capped at 1% int the EU.
  16. 16Safety-wise, the fear mongering does not hold up to the evidence. The EU's Scientific Committee on Consumer Safety and FDA consider it safe as a preservative at up to 1%, including for children of all ages.
  17. 17Adverse systemic effects only showed up in animal studies at exposures roughly 200x higher than what people get from cosmetics. And despite its very widespread use, this ingredient is a rare sensitizer and allergic reactions are uncommon.
  18. 18Water. 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.
  19. 19So why is it so popular? Water most often acts as a solvent - this means that it helps dissolve other ingredients into the formulation.
  20. 20You'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

Related product references

Product

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Source: incidecoder.comView reference →
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Comparison edit

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