Hydration · Soothing · Barrier support
Beta-Glucan
A polysaccharide usually derived from oats or yeast that soothes irritation and supports the skin barrier without the stickiness of heavier humectants.
Definition
What is it?
Beta-glucan is a long-chain polysaccharide found in the cell walls of oats, yeast, mushrooms and some grains. Cosmetic-grade beta-glucan is usually derived from oats or baker's yeast, Saccharomyces cerevisiae, and purified for topical use. This differs from beta-glucan used in oral immune-support supplements.
How it works
How does it work?
Beta-glucan creates a lightweight film that helps retain moisture and soften the skin surface without heaviness. Its polysaccharides support the barrier and soothe visible signs of stressed skin. For this reason, it is often combined with ceramides, panthenol and other hydrating ingredients.
Benefits
What does Beta-Glucan actually do for the skin?
- 01Hydrates without a heavy or sticky feel
- 02Soothes visible redness and irritation
- 03Supports barrier repair alongside ceramides
- 04Suitable for reactive skin and a compromised barrier
- 05Creates a lightweight protective layer that reduces moisture loss during the day
Who is it for?
Is it right for your skin?
For sensitive, reactive, dehydrated skin or a weakened barrier that needs hydration and soothing without a heavy texture.
Notes and myths
What should you know before using it?
Oat-derived beta-glucan deserves caution in people with oat sensitivity, although true allergy is rare. Check the source in the INCI list: Avena Sativa for the oat-derived form and Saccharomyces Cerevisiae for the yeast-derived form.
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Products with Beta-Glucan
Ready to add Beta-Glucan to your routine?
Browse our full catalog of Korean skincare products, or read the K-beauty guide for the correct order of use.