Hydrolyzed Beta-Glucan

Hydrolyzed beta-glucan is a breakdown product of beta-glucans, complex carbohydrates naturally found in the cell walls of yeast, fungi, and grains. In skincare, the hydrolyzed form—broken down into smaller molecular fragments—is used for its skin-conditioning properties.When applied topically, hydrolyzed beta-glucan works primarily as a humectant and skin protectant, helping to draw moisture into the skin and support the skin barrier. It is gentle and suitable for most skin types, making it a common inclusion in moisturisers, serums, and barrier-repair products.

Hydrolyzed beta-glucan functions as a humectant, meaning it absorbs water from the environment and from deeper skin layers, drawing it into the outer layers where it is needed most. Its molecular structure allows it to sit on the skin surface and within the stratum corneum, creating a film that helps prevent moisture loss.Additionally, beta-glucans have been shown to interact with skin cells in ways that may promote barrier integrity. Some research suggests they can trigger mild immune responses in the skin that support healing and reduce inflammatory responses, though this effect is genera…

Hydrolyzed beta-glucan is most effective when used in products designed to deliver hydration—such as essences, serums, or moisturisers—and works well both morning and evening. For best results, apply to damp skin to maximise its humectant effect, or layer it under an occlusive moisturiser to seal in hydration. It pairs well with other barrier-supporting ingredients such as ceramides, niacinamide, and panthenol.

Hydrolyzed beta-glucan is generally well-tolerated and considered safe for topical use in cosmetics. It is suitable for sensitive skin. Those with specific yeast or fungal sensitivities should check product formulations, though sensitisation from beta-glucan itself is rare.