Usnic Acid
What is it?
Usnic acid is an antibacterial substance in many lichens. It occurs in oak moss which is used in the fragrance industry.
How can I avoid it?
Skin contact with usnic acid is required for it to cause a rash. Discontinuation of exposure to products containing usnic acid 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.
Uses:
- Skin care products/Cosmetics
- Fragrances
- Moisturizers
- Mouthwash
- Sunscreens
- Toothpaste
- Medicinal uses
- Anti-acne preparations
- Topical antibiotics
- Dietary supplements
- Herbal products
- Medicinal creams
- Clothing dyes
Potential cross-reacting/co-reacting substances:
- Oak moss
- Other fragrances
MC4999-72
