Ingredient Encyclopedia

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Discover what’s inside your skincare — from retinol to aloe vera — with clear guides on benefits, uses, and safety.

Ingredient Encyclopedia

Beta-Glucan – Benefits, Side Effects & Uses

by ThankMeNow Editors on Sep 10, 2025
Beta-Glucan is a high-molecular-weight polysaccharide (a complex carbohydrate) comprised of linked glucose molecules. In skincare, it is typically derived from the cell walls of oats, yeast, or medicinal mushrooms. Unlike many large molecules that sit only on the surface, Beta-Glucan is a "biological response modifier." It works by binding to specific receptors (such as Dectin-1) on macrophages—the "scout" cells of the skin’s immune system. This interaction signals the skin to accelerate repair, quieten inflammatory cytokines, and stimulate fibroblasts to produce collagen. Often cited as being 20% more hydrating than Hyaluronic Acid at the same concentration, Beta-Glucan acts as a "Deep Hydrator," providing both immediate surface plumping and long-term resilience.