Peptide Skincare & BeautySkin science and ingredient guides

Skin science article

The INKEY List Omega Water Cream Versus innisfree Jeju Cherry Blossom Jelly Cream

The INKEY List Omega Water Cream Versus innisfree Jeju Cherry Blossom Jelly Cream This barrier-repair moisturizer is formulated around Niacinamide to strengthen the skin barrier and balance excess oil. This brightening moisturizer is formulated around Niacinam

The INKEY List Omega Water Cream Versus innisfree Jeju Cherry Blossom Jelly Cream

This barrier-repair moisturizer is formulated around Niacinamide to strengthen the skin barrier and balance excess oil.

This brightening moisturizer is formulated around Niacinamide to brighten dull-looking skin.

What's inside

Key Ingredients

Benefits

Concerns

Ingredients Side-by-side

Water

Dicaprylyl Carbonate

Glycerin

Niacinamide

Propanediol

Betaine

Polyglyceryl-4 Isostearate

Coco-Caprylate/Caprate

Magnesium Sulfate

Glycosphingolipids

Glycolipids

Sodium Benzoate

Disteardimonium Hectorite

Oleic Acid

Potassium Sorbate

Citric Acid

Polyglycerin-3

Water, Dicaprylyl Carbonate, Glycerin, Niacinamide, Propanediol, Betaine, Polyglyceryl-4 Isostearate, Coco-Caprylate/Caprate, Magnesium Sulfate, Glycosphingolipids, Glycolipids, Sodium Benzoate, Disteardimonium Hectorite, Oleic Acid, Potassium Sorbate, Citric Acid, Polyglycerin-3

Dipropylene Glycol

1,2-Hexanediol

Carbomer

Tromethamine

Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer

Disodium EDTA

Ethylhexylglycerin

Parfum

Prunus Yedoensis Leaf Extract

Tocopherol

Water, Glycerin, Propanediol, Dipropylene Glycol, Niacinamide, Betaine, 1,2-Hexanediol, Carbomer, Tromethamine, Ammonium Acryloyldimethyltaurate/Beheneth-25 Methacrylate Crosspolymer, Disodium EDTA, Ethylhexylglycerin, Parfum, Prunus Yedoensis Leaf Extract, Tocopherol

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.

Betaine is a humectant. Like hyaluronic acid, it helps attract and retain moisture in the skin. It’s known for being gentle and for helping the skin maintain balanced hydration.

Betaine is mainly used to improve hydration and support calmer skin. It helps skin cells regulate water balance because it functions as an osmolyte.

Some studies suggest betaine may support making skin tone more even.

Fun fact: Betaine naturally exists in the skin and the body. In cosmetic products, it can be either plant-derived (most commonly from sugar beets) or synthetically produced for consistency and stability.

Betaine is also known as trimethylglycine.

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.

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 Side-by-side

  1. 01Prunus Amygdalus Dulcis Oil
  2. 02Cetearyl Alcohol
  3. 03PEG-6 Caprylic/Capric Glycerides
  4. 04Avena Sativa Kernel Oil
  5. 05Candelilla Cera
  6. 06Silica
  7. 07Sorbitan Stearate
  8. 08Tribehenin
  9. 09PEG-60 Almond Glycerides
  10. 10Avena Sativa Kernel Flour
  11. 11Water
  12. 12Benzyl Alcohol
  13. 13Phenoxyethanol
  14. 14Lecithin
  15. 151,2-Hexanediol
  16. 16Ascorbyl Palmitate
  17. 17Tocopherol
  18. 18Biosaccharide Gum-4
  19. 19Helianthus Annuus Seed Oil
  20. 20Prunus Amygdalus Dulcis Oil, Cetearyl Alcohol, PEG-6 Caprylic/Capric Glycerides, Avena Sativa Kernel Oil, Candelilla Cera, Silica, Sorbitan Stearate, Tribehenin, PEG-60 Almond Glycerides, Avena Sativa Kernel Flour, Water, Benzyl Alcohol, Phenoxyetha…
Source · skinsort.com
02

Product index

Related product references

Product

The Inkey List 10% Azelaic Acid Serum

The Inkey List 10% Azelaic Acid Serum The Inkey List 10% Azelaic Acid Serum ingredients explained: Aqua (Water), Azelaic Acid, Propanediol, Hydroxyethyl Acrylate/Sodium Acryloyldimethyl Tau…

Source: incidecoder.comView reference →
03

Comparison edit

Read side by side