Sunscreen Filters

Polysilicone-15

INCI: POLYSILICONE-15

Reviewed by Daisy · Last updated 14 Aug 2026

A silicone-based UV filter that provides broad-spectrum sun protection in skincare formulations

Best For Skin Types

All

Addresses

Sun damage prevention

Effective Concentrations

2–4%

Usage Frequency

Daily

What Is Polysilicone-15?

Polysilicone-15 is a synthetic UV filter belonging to the silicone family of sun protection ingredients. It functions as a broad-spectrum ultraviolet absorber, designed to protect skin from both UVA and UVB radiation.

This ingredient is used primarily in sunscreens and sun-protective skincare products, typically at concentrations between 2% and 4%. Its silicone base means it tends to integrate smoothly into formulations, particularly those designed for a lightweight or non-greasy feel.

How It Works

Polysilicone-15 works as a chemical UV filter, absorbing ultraviolet radiation and converting it into heat, which is then released harmlessly from the skin. This process occurs at the molecular level when UV rays contact the filter.

Because it is silicone-based, it disperses evenly within skincare formulations and spreads smoothly across the skin surface, providing consistent coverage without the heavy or sticky feeling that some traditional UV filters can leave behind.

Clinical Evidence & References

Limited research is available specifically on polysilicone-15's efficacy and safety profile. The ingredient is used in commercial sunscreen formulations, suggesting it meets regulatory standards for UV protection in markets where it is approved.

One case report has documented allergic contact dermatitis associated with this ingredient in an individual using sunscreen, though such reactions appear uncommon. As with any UV filter, individual sensitivities can occur, and further research would help clarify its safety profile across broader populations.

How to Use

Polysilicone-15 is typically used in daily sunscreen and sun-protective skincare products. Apply generously to all sun-exposed areas as part of your daily routine. It can be layered with other skincare ingredients, though as with all sunscreens, ensure adequate coverage for effective protection.

Safety & Precautions

Generally well-tolerated, though allergic contact dermatitis has been reported in isolated cases. Discontinue use if irritation develops and perform a patch test if you have known sensitivities to silicone-based ingredients.

Frequently Asked Questions

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