Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

Good Molecules Hyaluronic Acid Serum Versus The INKEY List Polyglutamic Acid Hydrating Serum

Good Molecules Hyaluronic Acid Serum Versus The INKEY List Polyglutamic Acid Hydrating Serum This hydrating serum is formulated around Sodium Hyaluronate to hydrate skin. This hydrating serum is formulated around Polyglutamic Acid to hydrate skin and strengthe

By Peptide Skincare & Beauty Editorial TeamPublished

Good Molecules Hyaluronic Acid Serum Versus The INKEY List Polyglutamic Acid Hydrating Serum

This hydrating serum is formulated around Sodium Hyaluronate to hydrate skin.

This hydrating serum is formulated around Polyglutamic Acid to hydrate skin and strengthen the skin barrier.

What's inside

Key Ingredients

No key ingredients

Benefits

Concerns

No concerns

Ingredients Side-by-side

Water

Propanediol

Glycerin

Sodium Hyaluronate

Hydroxyacetophenone

Sodium Citrate

Citric Acid

Ethylhexylglycerin

Tocopherol

Water, Propanediol, Glycerin, Sodium Hyaluronate, Hydroxyacetophenone, Sodium Citrate, Citric Acid, Ethylhexylglycerin, Tocopherol

Dimethicone

Butylene Glycol

Bis-PEG-12 Dimethicone

Polymethylsilsesquioxane

Polysilicone-11

Phenoxyethanol

Polyglutamic Acid

Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer

Isohexadecane

Coco-Glucoside

Sodium Benzoate

Hydroxyethylcellulose

Polysorbate 80

Potassium Sorbate

Decyl Glucoside

Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer

Sorbitan Oleate

Trisodium Ethylenediamine Disuccinate

Caprylyl Glycol

Hexylene Glycol

Oryza Sativa Bran Extract

Water, Dimethicone, Butylene Glycol, Bis-PEG-12 Dimethicone, Glycerin, Polymethylsilsesquioxane, Polysilicone-11, Phenoxyethanol, Polyglutamic Acid, Sodium Acrylate/Sodium Acryloyldimethyl Taurate Copolymer, Isohexadecane, Propanediol, Coco-Glucoside, Sodium Benzoate, Hydroxyethylcellulose, Polysorbate 80, Ethylhexylglycerin, Potassium Sorbate, Decyl Glucoside, Dimethylacrylamide/Acrylic Acid/Polystyrene Ethyl Methacrylate Copolymer, Sorbitan Oleate, Trisodium Ethylenediamine Disuccinate, Caprylyl Glycol, Hexylene Glycol, Oryza Sativa Bran Extract

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.

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.

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!

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. 06Glycerin (or glycerol) is a compound naturally found in your skin. It's a powerhouse humectant that pulls water into the stratum corneum.
  7. 07Topically, glycerin does several things at once:
  8. 08Your 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.
  9. 09Aquaporin-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.
  10. 10This 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.
  11. 11Just know very high concentrations (>40%) can feel tacky in low humidity.
  12. 12Glycerin is the name for this ingredient in American English. British English uses Glycerol/Glycerine.
  13. 13Hydrolyzed Hyaluronic Acid is hyaluronic acid (HA) that is broken down into lower molecular weight fragments.
  14. 14It's a humectant that pulls and holds water in the skin to help with hydration, plumpness, and reduce transepidermal water loss.
  15. 15Because hydrolyzed hyaluronic acid is smaller in size, it can slip past your outermost layer of skin more easily than full-sized HA.
  16. 16Most formulations will combine all sizes to get the best of both worlds.
  17. 17Typical usage levels range from 0.01-1%. Any percentage higher than 2% might become goopy and tacky.
  18. 18Panthenol is a common ingredient that helps hydrate and soothe the skin. It is found naturally in our skin and hair.
  19. 19There are two forms of panthenol: D and L.
  20. 20D-panthenol is also known as dexpanthenol. Most cosmetics use dexpanthenol or a mixture of D and L-panthenol.
Source · skinsort.com ⟶
02

Product index

Related product references

03

Comparison edit

Read side by side

04

Ask the journal

Related questions

01What Skin Types Should Use Hyaluronic Acid?

“Hyaluronic acid is particularly helpful for those experiencing dry skin, and for those desiring a plumping effect,” explains Dr. King. But, if you have an oily skin type, don’t discredit hyaluronic acid from your routine just yet. Despite the excess sebum that you may experience, it’s important to keep your skin hydrated so that it doesn’t overcompensate and produce even more oil as a result. Besides your skin type, you should also look at the condition of your skin to decide if it’s time to begin using hyaluronic acid. “If your skin is starting to look dull, flaky and you’re seeing more pronounced fine lines and wrinkles, that’s a pretty good indication that it’s time to add this ingredient to your routine,” adds O’Conner.

Source · www.skincare.com ⟶
02Is Serum Good for All Skin Types?

Serums are a form of skincare that can be added to any routine no matter what your skin type is. All skin types can benefit from the use of a serum since there are so many different formulations that can target specific skincare concerns. “Serums are used for hydration,to aid [or] maintain the skin barrier, or treat skin issues like acne or rosacea,” says Dr. Lewis. The type of serum that you may use should depend on the skin issue you’re trying to target. Think of serums as a treatment for the skin. “Some serums can reverse damage and help prevent free radicals that cause the signs of aging skin,” adds Dr. Lewis.

Source · www.skincare.com ⟶

Continue reading

Related articles