What it is
Polyester-7 is a synthetic polyester polymer formed by condensation of polyol and polyacid building blocks. In sunscreens it functions mainly as a film former and emollient-type texture modifier, helping create an even cosmetic layer and improving slip and spread. It is used to refine the sensory profile of the finished product.
Safety & warnings
As a high-molecular-weight synthetic polymer, Polyester-7 is generally considered well tolerated in topical formulas and is not associated with notable sensitization at typical use levels.
Origin & sourcing
Synthetic polymer produced by industrial polycondensation; it is not derived from natural sources.
Questions everyone asks
Is Polyester-7 natural or synthetic?
It is a synthetic polyester polymer made by industrial polycondensation of polyol and polyacid components.
Why is Polyester-7 in sunscreen?
It works as a film former and texture agent, helping the product spread evenly and leave a smooth cosmetic finish.