What is it?
Methylene bis-benzotriazolyl tetramethylbutylphenol is an ultraviolet absorbing agent present in sunscreens and personal care products.

How can I avoid it?
Skin contact with methylene bis-benzotriazolyl tetramethylbutylphenol is required for it to cause a rash. Discontinuation of exposure to products containing methylene bis-benzotriazolyl tetramethylbutylphenol should result in improvement and/or resolution of your dermatitis. By law, all products made in the U.S. for topical use have the ingredients listed on the product package or box that contains it.

Skin care products/Cosmetics
  • Aftershave
  • Face cream
  • Hand cream
  • Lip care
  • Lipsticks
  • Liquid makeup foundation
  • Sunscreen
Other names for methylene bis-benzotriazolyl tetramethylbutylphenol:
• Tinosorb M
• Bisoctrizole


How safe is it?

Hang tight. We're thinking.