Sulisobenzone
What is Sulisobenzone?
Sulisobenzone, chemically known as benzophenone-4, is a synthetic organic compound belonging to the benzophenone class of ultraviolet absorbers. Developed for cosmetic use, it functions primarily as a broad-spectrum UV filter in sunscreens and sun-protective products. Its water-soluble nature allows incorporation into water-based formulations, including sprays and gels, enhancing product spreadability and resistance to rinsing. Upon skin application, it absorbs high-energy UV radiation in the UVB range (around 290-320 nm) and some shorter UVA wavelengths, converting the energy into harmless heat to prevent penetration into deeper skin layers. This mechanism helps shield skin cells from radiation-induced damage. Commonly used at regulated concentrations, it appears in daily moisturizers, lotions, and waterproof sunscreens, often combined with other filters for optimal coverage. Its stability under sunlight supports long-lasting performance in various cosmetic vehicles.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Offers absorption-based protection against UVB and short UVA rays.
Water-soluble properties suit lightweight, rinse-resistant sunscreen formulas.
Non-comedogenic, unlikely to clog pores in sunscreen products.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals using chemical sunscreens for daily UV defense. | People with known photoallergic reactions to benzophenones. |
| People preferring water-based or spray sunscreen textures. | Individuals preferring mineral-based UV blockers. |
| Those with non-sensitive skin seeking broad-spectrum options. | Those with highly sensitive skin prone to irritation. |
Safety Notes
- Regulators like FDA and CIR deem it safe for use in sunscreens at approved levels.
- Rare cases of contact or photoallergy reported; patch testing advised.
Frequently Asked Questions about Sulisobenzone
What does sulisobenzone do in skincare?
It acts as a chemical sunscreen agent, absorbing UV rays to help protect skin from sun exposure.
Is sulisobenzone suitable for oily skin?
Yes, its non-comedogenic nature makes it unlikely to contribute to pore clogging.
Can sulisobenzone cause skin irritation?
It shows low irritation potential in most users, though rare allergic responses occur.