Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

BYOMA Barrier Repair Eye Cream Versus The INKEY List Caffeine Eye Cream

BYOMA Barrier Repair Eye Cream Versus The INKEY List Caffeine Eye Cream This barrier-repair eye moisturizer is formulated around Hyaluronic Acid and Copper Tripeptide-1 to strengthen the skin barrier and hydrate skin. This anti-aging eye moisturizer is formula

BYOMA Barrier Repair Eye Cream Versus The INKEY List Caffeine Eye Cream

This barrier-repair eye moisturizer is formulated around Hyaluronic Acid and Copper Tripeptide-1 to strengthen the skin barrier and hydrate skin.

This anti-aging eye moisturizer is formulated around Caffeine and Palmitoyl Tetrapeptide-7 to soften the look of wrinkles.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Glycerin

Caprylic/Capric Triglyceride

Phenyl Trimethicone

Cetyl Ethylhexanoate

Hyaluronic Acid

Hydrolyzed Hyaluronic Acid

Sodium Hyaluronate

Propanediol

Copper Tripeptide-1

Butyrospermum Parkii Butter

Sphingolipids

Ethylhexylglycerin

Ceramide NP

Dipropylene Glycol

Butylene Glycol

Caprylic/Capric/Succinic Triglyceride

Vinyldimethicone

Acrylates/C10-30 Alkyl Acrylate Crosspolymer

Xanthan Gum

Polyglyceryl-2 Stearate

Glyceryl Stearate

Stearyl Alcohol

Glycereth-26

Cetearyl Alcohol

Ectoin

1,2-Hexanediol

Glycine

Theobroma Cacao Seed Extract

Thamnolia Vermicularis Leaf Extract

Coptis Japonica Root Extract

Hydroxyacetophenone

Ammonium Polyacryloyldimethyl Taurate

Dextrin

Tromethamine

Disodium EDTA

Water, Glycerin, Caprylic/Capric Triglyceride, Phenyl Trimethicone, Cetyl Ethylhexanoate, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Sodium Hyaluronate, Propanediol, Copper Tripeptide-1, Butyrospermum Parkii Butter, Sphingolipids, Ethylhexylglycerin, Ceramide NP, Dipropylene Glycol, Butylene Glycol, Caprylic/Capric/Succinic Triglyceride, Vinyldimethicone, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Polyglyceryl-2 Stearate, Glyceryl Stearate, Stearyl Alcohol, Glycereth-26, Cetearyl Alcohol, Ectoin, 1,2-Hexanediol, Glycine, Theobroma Cacao Seed Extract, Thamnolia Vermicularis Leaf Extract, Coptis Japonica Root Extract, Hydroxyacetophenone, Ammonium Polyacryloyldimethyl Taurate, Dextrin, Tromethamine, Disodium EDTA

Dicaprylyl Carbonate

Polyglyceryl-6 Distearate

Cetyl Alcohol

Glyceryl Behenate

Phenoxyethanol

Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Jojoba Esters

Albizia Julibrissin Bark Extract

Squalane

Caffeine

Polyglyceryl-3 Beeswax

Phospholipids

Glycine Soja Oil

Polysorbate 60

Sodium Phytate

Glycolipids

Sorbitan Isostearate

Citric Acid

Glycine Soja Sterols

Leuconostoc/Radish Root Ferment Filtrate

Sodium Benzoate

Tocopherol

Carbomer

Darutoside

Sodium Lactate

Polysorbate 20

Palmitoyl Tetrapeptide-7

Palmitoyl Tripeptide-1

Water, Glycerin, Dicaprylyl Carbonate, Propanediol, Polyglyceryl-6 Distearate, Cetyl Alcohol, Glyceryl Behenate, Phenoxyethanol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Jojoba Esters, Albizia Julibrissin Bark Extract, Squalane, Caffeine, Polyglyceryl-3 Beeswax, Phospholipids, Ethylhexylglycerin, Xanthan Gum, Glycine Soja Oil, Polysorbate 60, Sodium Phytate, Glycolipids, Sorbitan Isostearate, Butylene Glycol, Citric Acid, Glycine Soja Sterols, Leuconostoc/Radish Root Ferment Filtrate, Hyaluronic Acid, Sodium Benzoate, Tocopherol, Carbomer, Darutoside, Sodium Lactate, Polysorbate 20, Palmitoyl Tetrapeptide-7, Palmitoyl Tripeptide-1

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.

Butylene Glycol (or BG) is used within cosmetic products for a few different reasons:

Overall, Butylene Glycol is a safe and well-rounded ingredient that works well with other ingredients.

Though 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.

Ethylhexylglycerin is created from glycerin. It is a multitasker ingredient that:

The 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 to patch test if you are unsure.

Industry-reported use ranges from 8% in rinse-off products and 2% in leave-on formulations.

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.

Hyaluronic acid (HA) is a glycosaminoglycan (basically a long sugar chain) that your skin already makes on its own. In your skin, HA lives in the extracellular matrix and acts as the body's moisture reservoir.

Topically, HA is a humectant that binds water and helps skin look more plump, smooth, and hydrated.

The only catch is that HA isn't a single thing; it actually comes in a wide range of molecular weights (~50 - 2,000+ kDA) and size matters.

Some clinical evidence links low molecular weight versions to improved wrinkle depth, elasticity, anti-inflammatory effects, and barrier repair.

This is why the best HA serums blend the two sizes together so you get the best of both worlds.

The majority of cosmetic HA is produced by bacterial fermentation, typically using Streptococcus or Bacillus strains. Typical use levels in skincare sit around 0.1-2%.

A clinical study using a 0.2% low-molecular weight HA gel showed improvement in facial seborrheic dermatitis with excellent tolerance.

These are some other common types of Hyaluronic Acid:

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!

Xanthan gum is used as a stabilizer and thickener within cosmetic products. It helps give products a sticky, thick feeling - preventing them from being too runny.

On the technical side of things, xanthan gum is a polysaccharide - a combination consisting of multiple sugar molecules bonded together.

Xanthan gum is a pretty common and great ingredient. It is a natural, non-toxic, non-irritating ingredient that is also commonly used in food products.

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. 03This ingredient is also known as shea butter. It is a plant-derived extract from the nuts of the Africa shea tree and one of the most well-studied emollients.
  4. 04Because it has a high concentration of fatty acids (primarily oleic, stearic, and linoleic) it is able to form a protective barrier on the skin's surface. This helps seal in moisture and prevents transepidermal water loss (TEWL).
  5. 05In vitro research found an increase in skin hydration by 58% and a decrease in TEWL by 37.8% after 24 hours of applying this ingredient (pretty impressive for a single ingredient!).
  6. 06Besides hydration, shea butter also contains triterpenes that have anti-inflammatory potential. In particule, lupeol cinnamate has shown the highest anti-inflammatory activity in vivo.
  7. 07Shea butter also contains vitamins A and E which may contribute to antioxidant activity.
  8. 08While Shea Butter has an SPF rating of about 3-4, it is not a sunscreen replacement.
  9. 09This ingredient may not be fungal acne safe because its fatty acids fall within the C11-C24 range that the Malassezia yeast can metabolize.
  10. 10This ingredient shows up on a lot of "pore-clogging" lists but there's no real evidence behind that. It doesn't even have a comedogenic rating from an actual study; the numbers you'll find online come from blogs citing other blogs.
  11. 11Ratings for other ingredients mostly come from a 1980s rabbit ear test. This test doesn't translate well to human skin or to real products because the ingredient sits at a much lower percentage.
  12. 12Some people still find it breaks them out. So if that's you, definitely trust your skin. Just know this one's based on experience and not evidence.
  13. 13Caprylhydroxamic Acid is a chelating agent that helps cosmetics stay fresh, stable, and consistent over time.
  14. 14Chelating agents help prevent metal ions from binding to other ingredients. This helps prevent unwanted reactions and effects from using the product. It also helps prevent the growth of unwanted microbes in products that contain water.
  15. 15Caprylhydroxamic Acid is often used with natural antimicrobial products as an alternative to preservatives.
  16. 16Cetearyl alcohol is a waxy mixture of two fatty alcohols: cetyl alcohol and stearyl alcohol. It is an emollient and emulsifier.
  17. 17Despite having "alcohol" in its name, it has nothing to do with drying solvent alcohols; the FDA also allows "alcohol-free" products to contain fatty alcohols like this ingredient.
  18. 18It plays several roles in a formula:
  19. 19Typical use levels for this ingredient sit around 1-10% and the Cosmetic Ingredient Review Expert Panel has affirmed safety at concentrations up to 25% in leave-on products.
  20. 20Multiple assessments have found it to be non-irritating and non-sensitizing to most people.
Source · skinsort.com
02

Product index

Related product references

Product

John Jeff Caffeine Eye Cream

John Jeff Caffeine Eye Cream Ingredients in John Jeff Caffeine Eye Cream explained: benefits, concerns, and detailed analysis of 29 ingredients including Water, Niacinamide, and Caffeine A …

Source: skinsort.comView reference →

Product

Slow Sunday Caffeine Eye Cream

Slow Sunday Caffeine Eye Cream Slow Sunday Caffeine Eye Cream ingredients explained: Water/Aqua/Eau, Dipropylene Glycol, Isononyl Isononanoate, Cetearyl Alcohol, Arachidyl Alcohol, Butyrosp…

Source: incidecoder.comView reference →

Product

Anai Rui Rose Caffeine Eye Cream

Anai Rui Rose Caffeine Eye Cream Ingredients in Anai Rui Rose Caffeine Eye Cream explained: benefits, concerns, and detailed analysis of 33 ingredients including Water, Rosa Damascena Flowe…

Source: skinsort.comView reference →
03

Comparison edit

Read side by side