What it is
Polyglyceryl-10 Pentaisostearate is formed by esterifying decaglycerin (a chain of ten glycerol units) with five molecules of isostearic acid, yielding an amphiphilic molecule with a water-loving polyglycerol head and oil-loving fatty chains. This structure makes it an effective nonionic, PEG-free emulsifier that helps create stable oil-in-water and water-in-oil systems. It also provides emollient and conditioning effects that improve spreadability and skin feel in sunscreens and creams.
Safety & warnings
Polyglyceryl-10 Pentaisostearate is generally well tolerated and is valued as a gentle, PEG-free emulsifier option. It is not a recognized fragrance allergen and is not commonly associated with comedogenicity at typical use levels.
Origin & sourcing
Synthetic ester made from glycerin-derived polyglycerol and isostearic acid, both of which can be sourced from plant oils.
Questions everyone asks
What is Polyglyceryl-10 Pentaisostearate used for?
It is a nonionic emulsifier and emollient that helps blend oil and water phases while improving the spreadability and feel of a formula.
Is this a PEG-free emulsifier?
Yes, it is a polyglycerol-based ester and is often chosen as a PEG-free alternative for emulsification.