What it is
This ingredient is a viscous, oil-like ester built from polyglycerin-3, isostearic acid, and dimer dilinoleic acid. It is prized for wetting and dispersing pigments such as titanium dioxide and iron oxides, helping them spread evenly without clumping. In tone-up and color sunscreens it improves payoff, gloss, and the uniformity of the finish while conditioning the skin.
Safety & warnings
Polyglyceryl fatty-acid esters of this kind are generally well tolerated and considered low-irritancy. As a heavy, occlusive ester intended for pigment dispersion, very acne-prone users may prefer to patch test rich or high-coverage formulas.
Origin & sourcing
Synthetic ester made from polyglycerol and fatty acids (isostearic acid and dimer acid derived from linoleic acid); the fatty-acid raw materials are commonly of vegetable origin.
Questions everyone asks
What is this ingredient mainly for?
It wets and disperses mineral pigments like titanium dioxide and iron oxides so they spread evenly, which is why it is common in tone-up and tinted sunscreens.
Does it condition the skin too?
Yes. Alongside dispersing pigment it acts as an emollient that softens and smooths the skin surface.