What it is
Polyglyceryl-3 diisostearate is a nonionic ester made from polyglycerin-3 and isostearic acid. It is commonly used as a water-in-oil emulsifier, helping to disperse water droplets stably within an oil phase, which is useful in sunscreen sticks, balms, and rich creams. It also helps wet and disperse powders and pigments such as mineral UV filters.
Safety & warnings
Polyglyceryl esters of this type are nonionic and generally regarded as mild and well tolerated. It is not a recognized fragrance allergen.
Origin & sourcing
Synthetic ester derived from glycerin-based polyglycerol and isostearic acid, both of which can be sourced from plant-derived raw materials.
Questions everyone asks
What is polyglyceryl-3 diisostearate used for?
It is primarily a water-in-oil emulsifier that keeps water and oil blended in creams, balms, and sticks, and it also helps disperse pigments and mineral filters.
Is polyglyceryl-3 diisostearate harsh?
It is a nonionic emulsifier generally regarded as mild and well tolerated in cosmetic formulas.