Intelligent anti-aging skin care based on independent research     
Lose wrinkles, keep your bank account!     
Like Smart Skin Care on Facebook
 
Skin Care 101
Skin Care Basics
Skin Protection
Skin Biology
Biology of Aging
Ingredient Guide
Skin & Nutrition
Skin Conditions
 
Anti-Aging Treatments
Topical Actives
Wrinkle Fillers
Noninvasive
Invasive
 
Skin Care Smarts
Smart Choices
Best Practices
Find Good Skin Doc
Quick Tips
Freebie Finder
 
Reviews
Product Reviews
Reviews By Brand
 
How-To Infopacks
Skin Rejuvenation
DIY Skin Care
Skin & Nutrition
Eye Skin Care
 
Community & Misc
Forums
News and Updates
Search
 
   
You are here: Skin Protection > Sunscreens / Sunblocks >

Chemical UVB sunscreen/sunblock: Benzophenone-3 (Oxybenzone), Benzophenone-4 (Sulisobenzone)

Generic name: Benzophenone-3 (Oxybenzone), Benzophenone-4 (Sulisobenzone)

Brand(s): Various

Type: Chemical

Range of UV spectrum covered: UVB, short UVA (UVA-2) but not long UVA

Wavelengths covered: 290-360 nm

Stability:
Highly stable, do not degrade in sunlight. Protect other UV blocking agents from UV-induced degradation.

Summary:
Benzophenone-3 (Oxybenzone) and Benzophenone-4 (Sulisobenzone) are chemical UV absorbers solid (powder) at normal temperature. Both cover UVB and short UVA (UVA-2) range but are relatively weak sunscreens, inadequate when used alone. They are both very stable and protect and augment other UV absorbers. Benzophenones are absorbed into the skin and have been shown in some studies to promote generation of potentially harmful free radicals. The health implications are unclear but some experts have raised concerns that warrant further research.

Details:
Benzophenones are weak chemical UV absorbers. Benzophenone-3 (Oxybenzone) and Benzophenone-4 (Sulisobenzone) are the benzophenones most commonly used is sunscreen products. They are chemicals solid (powder) at normal temperature. Oxybenzone is water insoluble. Sulisobenzone is water insoluble in its acid form, but can be dissolved in water if neutralized. Both cover UVB and short UVA (UVA-2) range but are relatively weak sunscreens, inadequate when used alone. They are both very stable and protect and augment other UV absorbers.

Benzophenones are relatively easily absorbed into the skin and have been shown in some studies to promote generation of potentially harmful free radicals. Implications of these finding for typical use are unknown but some experts have raised concerns that warrant further research. (See our article on possible risks of absorbable chemical sunscreens.)




Related Links
The dark side of chemical sunscreens. Should you be concerned about photosensitization?
Index of sun blocking agents
User reviews of sunscreens
eMedicine: Sunscreens and photoprotection
Wikipedia: Sunscreens (incl. list of approved sunblocks)




Back to Sunscreens / Sunblocks
Back to Skin Protection





Home | About Us | Contact Us | Ask a Question |

Copyright © 1999-2014 by Dr. G. Todorov / SmartSkinCare.com
Site Disclaimer | Copyright Certification

   
-- advertisements --