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Polyurethane-34

What Polyurethane-34 is & what it does

A flexible film-forming polymer that boosts water resistance and the even, durable wear of sunscreens. It helps keep filters in place.

Is Polyurethane-34 safe in skincare?

Polyurethane-34 is used in cosmetics, often in sunscreens and color products, and is generally considered safe at typical levels. As a film-forming polymer it stays largely on the skin surface and is usually well tolerated. People with sensitive skin can patch test a new product as a precaution.

What does Polyurethane-34 do in skincare?

In skincare and sunscreen formulas Polyurethane-34 works as a film former that helps the product spread evenly and form a flexible, water-resistant layer on the skin. This can improve wear and help sunscreen stay in place. It is a texture and performance ingredient rather than an active treatment.

Is Polyurethane-34 natural or synthetic?

Polyurethane-34 is a synthetic film-forming polymer, manufactured rather than extracted from a natural source. Because it is made without animal-derived inputs, it is typically suitable for vegan formulas. Final certification depends on the brand.

Sunscreens with Polyurethane-34

We rate 24 sunscreens that contain it, showing the top 10 by overall score:

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