What it is
Sorbitan distearate is a nonionic surfactant formed by esterifying sorbitan, a dehydration product of the sugar alcohol sorbitol, with stearic acid. It is a low-HLB emulsifier that stabilizes water-in-oil and supports oil-in-water emulsions, often paired with higher-HLB co-emulsifiers, and it also contributes emollient feel. In sunscreens it helps keep the emulsion uniform so the UV filters stay evenly distributed.
Safety & warnings
Sorbitan esters are widely used nonionic emulsifiers with a long record of good tolerability and a low rate of irritation or sensitization. They are generally considered mild and non-sensitizing at cosmetic use levels.
Origin & sourcing
Synthetic, made by esterifying sorbitan, derived from plant-sourced sorbitol, with stearic acid that can be of plant or animal origin.
Questions everyone asks
What is sorbitan distearate used for?
It is a nonionic emulsifier and emollient that helps blend the oil and water phases of a cream or lotion and improves its feel.
Is sorbitan distearate irritating?
Sorbitan esters are generally regarded as mild and well tolerated at the levels used in cosmetics.