Polyurethane-15
What is Polyurethane-15?
Polyurethane-15 is a lab-made polymer created through reactions involving isocyanates and polyols, resulting in repeating urethane units in its structure. It belongs to the polyurethane family commonly used in cosmetic formulations like sunscreens, foundations, mascaras, and hair sprays. In products, it functions by spreading evenly and drying to form a sheer, elastic sheath that adheres to surfaces. This sheath helps anchor active ingredients, boosts durability against perspiration or friction, and maintains appearance over time. Its clear, non-sticky nature suits diverse textures from lotions to gels, contributing to smooth application and extended wear without heaviness.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Supports water resistance in sun protection products.
Aids in prolonging makeup wear and reducing transfer.
Provides flexible hold for hair styling applications.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| People wanting long-lasting cosmetic effects during daily activities. | Those with rare sensitivities to synthetic polymers. |
| Individuals needing reliable film protection in sunscreens. | People preferring entirely natural ingredient lists. |
| Users of styling products seeking humidity resistance. | Individuals experiencing contact dermatitis from film formers. |
Safety Notes
- Rated low concern by hazard assessment databases.
- Deemed safe for cosmetic use by expert review panels.
Frequently Asked Questions about Polyurethane-15
What does Polyurethane-15 do in cosmetics?
It creates a thin, flexible film to enhance water resistance, wear time, and hold in products like sunscreens and makeup.
Is Polyurethane-15 safe for skin?
Authoritative reviews consider it safe at cosmetic levels with low overall hazard.
Does it clog pores?
It has a comedogenic rating of zero, suitable for acne-prone skin.