What it is
This ingredient belongs to the alkyl glycoside family, in which a plant-derived sugar (xylose, a pentose) is bonded to a fatty alcohol chain to create a mild nonionic surfactant. In emulsions it helps disperse oil and water phases and stabilize the resulting cream or lotion, and it can leave a soft skin feel. It is commonly used together with sorbitan esters and other glycoside emulsifiers in natural-positioned and sunscreen formulas.
Safety & warnings
Alkyl glycoside emulsifiers are generally well tolerated and considered mild relative to many ionic surfactants. It is not a recognized fragrance allergen. As with any emulsifier, sensitive skin may occasionally react, but no notable comedogenicity or allergen concerns are established for this ingredient.
Origin & sourcing
Semi-synthetic. The xylose sugar portion is typically of plant origin, while octyldodecanol is a branched fatty alcohol that may be derived from vegetable oils or made synthetically; the two are joined by glycosylation.
Questions everyone asks
What does octyldodecyl xyloside do in a sunscreen?
It acts mainly as a nonionic emulsifier, helping blend the oil and water phases into a stable cream or lotion while contributing a soft skin feel.
Is it the same as a detergent surfactant?
It is a mild nonionic surfactant of the alkyl glycoside type, used more for emulsification than as a foaming cleanser.