The usage prevalence of ingredients in topical products is important to dermatologists and industry.
To determine the prevalence of methylisothiazolinone (MI) in various types of consumer products
The Contact Allergy Management Program (CAMP) database was mapped and sorted in spreadsheet format to determine the prevalence of MI in various types of consumer products.
Methylisothiazolinone was found in 13.2% of 4660 total products in CAMP. High usage of MI was seen in dishwashing products (64%), shampoos (53%), bathroom/kitchen/all-purpose cleaners (47%), hair conditioners (45%), hair dyes (43%), laundry additives/fresheners/softeners (30%), soaps/cleansers (29%), and surface cleaners/disinfectants (27%). Of the products containing MI, MI alone (without methylchloroisothiazolinone) was most common in makeup products (100%), cleaning/dish/laundry products (>99%), moisturizers (82%), shaving products (78%), sunscreens (71%), and antiaging products (67%).
The American Contact Dermatitis Society’s CAMP is a valuable tool to collect epidemiologic data on the incidence of specific ingredient usage in various types of topical products.
From the Northwestern University Medical Center, Chicago, IL.
Address reprint requests to Andrew Scheman, MD, 1535 Lake Cook Road, Suite 401, Northbrook, IL 60062. E-mail: email@example.com.
The authors have no funding or conflicts of interest to declare.