What it is
Beta-glucan is a polysaccharide sourced from yeast, oats, or other organisms; carboxymethylation makes it more water-soluble and easier to formulate, and it is supplied as the sodium salt. In a sunscreen it acts as a humectant and conditioning agent that helps the skin feel soothed and hydrated, and it can form a light moisture-retaining film. It contributes a comfortable, smooth feel without heaviness.
Safety & warnings
Carboxymethyl beta-glucan is generally well tolerated and is often chosen for soothing, conditioning purposes, with low irritation and sensitization potential. It is not regarded as comedogenic and contains no known fragrance allergens.
Origin & sourcing
Derived from naturally occurring beta-glucan (commonly from yeast or oats) that is chemically modified by carboxymethylation and neutralized with sodium.
Questions everyone asks
Where does beta-glucan come from?
It is a natural polysaccharide commonly sourced from yeast or oats; here it is carboxymethylated to improve water solubility.
What does it do for skin?
It works as a humectant and conditioning agent, helping skin feel hydrated and soothed.