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
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 7in1
Lists fragrance, sulfates, silicones, coconut derivatives
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
Soap & Glory
Travel Size Face Soap And Clarity Facial Wash
Lists fragrance, fragrance allergens, chemical UV filters, 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
Tresemme
Tresemme Shampoo coconut milk and aloe vera
Lists fragrance, sulfates, formaldehyde releasers, coconut derivatives
Kiehl’s Since 1851
Ultra Facial Oil-Free Cleanser
None of Poliage’s flag groups listed
Olay
Ultra Moisture Body Wash Shea Butter
Body wash · Lists fragrance, sulfates, coconut derivatives
Neutrogena
Ultra Sheer Dry-Touch Sunscreen with Helioplex
Sunscreen · Lists fragrance, silicones, chemical UV filters
Hempz
Vanilla Plum Herbal Body Moisturizer
Moisturizer · Lists fragrance, fragrance allergens, retinoid, silicones
Neutrogena
Visibly Clear Désincrustant Points Noirs
Lists fragrance, exfoliating acid, salicylic acid
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