What is it?
Butyl Methoxydibenzoylmethane is a newer, particularly effective ultraviolet A (UVA) blocker currently used in the U.S.

How can I avoid it?
Skin contact with Butyl Methoxydibenzoylmethane is required for it to cause a rash. Discontinuation of exposure to products containing Butyl Methoxydibenzoylmethane should result in improvement and/or resolution of your dermatitis. By law, all products made in the US for topical use have the ingredients listed either on the product package or the box that contains it, so check the labeling of your skin care products for this ingredient. If there is no information ask your pharmacist or call the company directly. At work, request a material safety data sheet (MSDS) to help identify potential sources of exposure.

Avoidance requires reading labels, package inserts, and on occasion, communication with the manufacturer that produces product potentially containing Butyl Methoxydibenzoylmethane.

  • Skin Care Products / Cosmetics
    • Make-ups
    • Moisturizers and lotions
    • Lipstick and lip balm
    • Bleaching creams
    • Self-tanners and sun oils
Other names for Butyl Methoxydibenzoylmethane:•
  • 1-4-(1,1-Dimethylethyl)phenyl-3-3(4-methoxypheny 1)-1,3-propanedione•
  • Avobenzone
  • Butyl methoxydibenzoylmethane
  • Parsol 1789
  • Avobenzona
  • Methoxydibenzoylmethane
  • Eusolex 9020
  • Escalol 517
  • Milestab 1789
Potential cross-reacting/co-reacting substances:
  • Isopropyl Methoxydibenzoylmethane

How safe is it?

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