Methylchloroisothiazolinone
Methylchloroisothiazolinone is a preservative ingredient. It’s in 327 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, usually paired with methylisothiazolinone. Rinse-off products only in the EU.
What it does
Contains Methylchloroisothiazolinone: preservative
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 35333, accessed October 22, 2026.
Products that contain Methylchloroisothiazolinone
Head & Shoulders
For Men (3 Action Formula)
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Pantene
formula pro vitaminas
Lists fragrance, fragrance allergens, sulfates
Olay
Fresh Radiance Body Wash with Essence of Birch Water and Lavender
Body wash · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Olay
Fresh Radiance Body Wash with Essence of Strawberry and Mint
Body wash · Lists fragrance, fragrance allergens, sulfates, coconut derivatives
John Frieda
Frizz Ease
Lists fragrance, fragrance allergens, sulfates, silicones, formaldehyde releasers, coconut derivatives
John Frieda
Frizz Ease Flawlessly Straight Shampooing lisse idéal
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
L’Oréal
Fructis Shampooing fortifiant Matière & Densité
Lists fragrance, fragrance allergens, drying alcohol, sulfates, coconut derivatives
Cien
Gel de baño
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cien
Gel de ducha 0%
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Cosmia
Gel douche gommant
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
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
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 conditioner
Lists fragrance, fragrance allergens, silicones
head & shoulders coconut shampoo
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders Tea Tree Oil Shampoo
Lists fragrance, essential oils, sulfates, silicones, coconut derivatives
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