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
Old Spice
Swagger
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
sweet cinnamon pumpkin shower gel
Lists fragrance allergens, chemical UV filters
Teatrical
Teatrical crema
Lists fragrance, fragrance allergens
Philosophy
The Microdelivery Exfoliating Facial Wash
Lists fragrance allergens, coconut derivatives
treacle moon
The raspberry kiss
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Unilever
Timotei Après Shampoing Cheveux Normaux
Lists fragrance, fragrance allergens, exfoliating acid, coconut derivatives
Unilever
Timotei Après Shampoing Femme enrichie aux Huiles d’Argan Bio et d’Amande et Fleur de Jasmin Lot 2x300ML
Lists fragrance, fragrance allergens, exfoliating acid, silicones, coconut derivatives
Unilever
Timotei Après-Shampooing aux Huiles d’Argan Bio
Lists fragrance, fragrance allergens, exfoliating acid, silicones, coconut derivatives
Unilever
Timotei Blond Lumière Après Shampoing à l’extrait de Camomille Cheveux Blonds
Lists fragrance, fragrance allergens, exfoliating acid, silicones
Tío Nacho
Tío Nacho Anti-Caida Engrosador
Lists fragrance, fragrance allergens, sulfates, parabens
Unilever
Tonus Brillance Shine Recharge Shampooing
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, chemical UV filters, coconut derivatives
top care sensitive skin nourishing body wash
Lists fragrance, coconut derivatives
Top Care Deep moisturizing nourishing body wash
Lists fragrance, coconut derivatives
Olay
Total Effects Facial Cleanser Refreshing Citrus Scrub
Cleanser · Lists fragrance, exfoliating acid, sulfates, salicylic acid, coconut derivatives
Olay
Total Effects Revitalizing Foaming Face Cleanser
Cleanser · Lists fragrance, sulfates, coconut derivatives
Aussie
Total Miracle 3 Minute Miracle Conditioner w/ Apricot
Lists fragrance
Aussie
TOTAL MIRACLE 7N1 CONDITIONER
Conditioner · Lists fragrance, fragrance allergens, silicones
Aussie
TOTAL MIRACLE 7N1 SHAMPOO
Shampoo · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Origins
Travel Size Checks and Balances Frothy Face Wash
Lists fragrance allergens, essential oils, coconut derivatives
Tresemme
Tresemee Moisture Rich
Lists fragrance, sulfates, silicones, formaldehyde releasers, coconut derivatives
tresemmé
Lists fragrance, fragrance allergens, exfoliating acid, silicones
tresemme color revitalize
Lists fragrance, fragrance allergens, exfoliating acid, silicones
Tresemme
Tresemme Conditioner
Lists fragrance, fragrance allergens, exfoliating acid, silicones
Tresemme
Tresemme expert botanique coconut conditioner
Lists exfoliating acid, coconut derivatives
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