What it is
Polyurethane-62 is a synthetic polymer typically supplied as a waterborne dispersion that dries to a flexible, continuous film. In sunscreens it is used as a film former that helps the product set into an even layer and improves the distribution and adhesion of UV filters across the skin. It can also contribute to the overall texture and wear of the formula.
Safety & warnings
Polyurethane-62 is a large polymer that remains on the skin surface and is not appreciably absorbed, with a generally favorable tolerability profile in topical use. It is not a known fragrance allergen and is not a comedogenic oil.
Origin & sourcing
Synthetic polymer; commonly supplied as a polyurethane dispersion in water.
Questions everyone asks
What does Polyurethane-62 do in a sunscreen?
It forms a flexible film that helps spread the UV filters into an even, well-adhered layer on the skin.
Is Polyurethane-62 a plastic?
It is a polyurethane polymer used as a cosmetic film former; on the skin it dries into a thin, flexible film rather than a hard plastic.