What it is
Polyglyceryl-6 octastearate is produced by esterifying polyglycerin-6 with several units of stearic acid, creating a lipophilic non-ionic emulsifier. It helps stabilize emulsions and is often paired with more hydrophilic co-emulsifiers, and it is frequently used in mineral sunscreens to help disperse pigments and oils. It contributes a soft, cushioned skin feel.
Safety & warnings
Polyglyceryl stearate esters are generally well tolerated and widely used in leave-on cosmetics with low irritation potential.
Origin & sourcing
Made from stearic acid, a fatty acid obtainable from vegetable or animal fats, reacted with polyglycerin derived from glycerin.
Questions everyone asks
What role does polyglyceryl-6 octastearate play in mineral sunscreens?
It helps emulsify and evenly disperse oils and mineral UV filters, supporting a smooth, uniform layer on the skin.
Is it a PEG-based ingredient?
No. It is a polyglyceryl ester, a PEG-free class of non-ionic emulsifiers.