Hydration · Soothing
Betaine
An osmolyte originally derived from sugar beet that supports water balance in skin cells during stress without adding oiliness or stickiness.
Definition
What is it?
Betaine, specifically trimethylglycine, was first isolated from sugar beet, which is where its name comes from. It occurs naturally in many plants and in the human body, where cells use it as an osmolyte, a molecule that regulates water balance across the cell membrane, especially under stress such as heat, dryness or high salinity.
How it works
How does it work?
Betaine acts as both a humectant and an osmolyte, supporting water balance in the skin's surface layers. It reduces the feeling of tightness, improves comfort and helps offset the drying effect that some cleansers or active ingredients can have in a formula.
Benefits
What does Betaine actually do for the skin?
- 01Maintains moisture balance and eases the feeling of dehydration
- 02Supports skin comfort in dry air, heat or after cleansing
- 03Provides mild anti-irritation support
- 04Can be included in formulas without adding oiliness or stickiness
- 05Well tolerated by every skin type
Who is it for?
Is it right for your skin?
For dehydrated, sensitive skin or skin that feels tight after cleansing, as well as for lightweight formulas that need hydration without oiliness.
Notes and myths
What should you know before using it?
Betaine complements the hydrating and soothing performance of a formula, especially when combined with hyaluronic acid, amino acids and barrier-supporting ingredients.
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Products with Betaine
Ready to add Betaine to your routine?
Browse our full catalog of Korean skincare products, or read the K-beauty guide for the correct order of use.