What it is
Polyurethane-35 is one of a family of polyurethane film formers used to build flexible, cohesive films on the skin. In sunscreens it helps spread the product into an even layer, supports uniform distribution of UV filters and pigments, and improves wear and transfer resistance. The film is designed to stay flexible so the product does not feel stiff.
Safety & warnings
High-molecular-weight polyurethane film formers are generally well tolerated, non-sensitizing, and not associated with fragrance allergens.
Origin & sourcing
Synthetic polyurethane polymer.
Questions everyone asks
What is polyurethane-35 for?
It is a film former that helps the sunscreen set into a smooth, even, flexible layer and supports more uniform, longer-lasting wear.
Does it make the product feel stiff?
It is designed to form a flexible film, so at typical use levels it improves wear without a stiff or tight feel.