Ingredient
Polyglyceryl-3 Diisostearate
PG-3 Diisostearate
Polyglycerol-3 Diisostearate
What it is
A synthetic ester of polyglycerol-3 and isostearic acid used as a water-in-oil emulsifier, commonly chosen for sunscreens and baby-skin formulas for its soft, non-greasy after-feel.
How it works
Its polyglycerol head group and two isostearate tails sit at the oil-water interface and stabilize water-in-oil emulsions, which is why it is a common workhorse in mineral and chemical sunscreen bases.
What it does
Emollient
Emulsifier
Concerns to know
-
Well tolerated
No significant safety concern is reported for this ingredient as used in cosmetics.