Methylisothiazolinone
Methylisothiazolinone is a preservative ingredient. It’s in 375 products on Poliage, most often conditioner, shampoo and body wash. Avoid lists on Poliage that include it: none.
Updated October 21, 2026
In plain English
A synthetic preservative used in small amounts in water-based products.
What it does
Contains Methylisothiazolinone: preservative
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 35341, accessed October 22, 2026. Also listed as mit and kathon cg.
Products that contain Methylisothiazolinone
Cien
Gel douche surgras
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Auchan
Gel intime
Lists fragrance, sulfates, coconut derivatives
Nuvel
Gel limpiador facial
Lists fragrance, formaldehyde releasers, coconut derivatives
l-oreal
Gel nettoyant au charbon multi-purifiant Pure Power 5 en 1
Lists fragrance, fragrance allergens, exfoliating acid, salicylic acid
Deliplus
Gel-Champú de baño dermoprotector
Lists fragrance, sulfates, silicones, coconut derivatives
Ivory
Gentle Body Wash
Body wash · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
VERB
Ghost Shampoo
Shampoo · Lists fragrance allergens, coconut derivatives
Herbal Essences
Hair & Body Wash
Lists fragrance, sulfates, silicones, coconut derivatives
hand soap
Lists fragrance, sulfates, coconut derivatives
Too Faced
Hangover Wash The Day Away Gentle Foaming Cleanser
Lists fragrance, coconut derivatives
head & shoulders
head & shoulders 2in1 classic clean
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
head & shoulders coconut shampoo
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Procter & Gamble
Head & Shoulders Cool Menthol
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders Tea Tree Oil Shampoo
Lists fragrance, essential oils, sulfates, silicones, coconut derivatives
head and shoulder’s shampoo
Lists fragrance, sulfates, silicones, coconut derivatives
head and shoulders
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head and Shoulders
Head and Shoulders Classic Clean Shampoo
Lists fragrance, sulfates, silicones, coconut derivatives
head and shoulders
Head and Shoulders Refreshing Menthol Anti-Dandruff Shampoo For Men
Lists fragrance, essential oils, sulfates, silicones, coconut derivatives
head&shoulders
head&shoulders shampooing antipelliculaire
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
Herbal Essences
Hello Hydration 2 in 1 Shampoo & Conditioner, Moisture for Hair
Shampoo · Lists fragrance, sulfates, silicones, coconut derivatives
Herbal Essences
Hello Hydration Conditioner
Lists fragrance, fragrance allergens, silicones
Herbal Essences
Hello Hydration Deeply Moisturizing Conditioner
Conditioner · Lists fragrance, fragrance allergens, silicones, coconut derivatives
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.