Polyurethane-10
INCI: POLYURETHANE-10
Reviewed by Kate · Last updated 14 Aug 2026
A synthetic film-former that creates a protective layer on skin
Best For Skin Types
All
Addresses
Usage Frequency
Daily
What Is Polyurethane-10?
Polyurethane-10 is a synthetic polymer derived from petrochemical sources. It functions as a film-forming agent, meaning it creates a thin, continuous layer across the skin surface when applied in a product.
In skincare, this ingredient is used primarily for its ability to form a protective barrier. It is found in a small proportion of skincare products, typically at low concentrations.
How It Works
Polyurethane-10 works by forming a polymer film across the skin. This film sits on top of the stratum corneum (the outermost layer of skin) and does not penetrate deeper layers.
The film acts as a physical barrier, which may help reduce moisture loss from the skin surface. This creates a temporary smoothing effect and can help keep other ingredients in contact with the skin for longer periods.
Clinical Evidence & References
Research on polyurethane-10 specifically in skincare is limited. Most evidence comes from its use in cosmetic formulations and functional assessments rather than dedicated clinical studies on skin health outcomes.
The ingredient is generally recognised as safe for topical use, though its long-term effects on skin barrier function or ageing remain understudied. Its film-forming properties are well-documented in formulation science, but isolated dermatological benefits have not been extensively evaluated in peer-reviewed literature.
How to Use
Polyurethane-10 is typically a background ingredient rather than an active. Use products containing it as directed by the brand. It works best when applied to clean skin and can be layered under other treatments. Because it forms a film, products containing it may feel slightly tacky initially but this usually settles within minutes.
Safety & Precautions
Frequently Asked Questions
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