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 22, 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
Tresemme
Tresemme Shampoo coconut milk and aloe vera
Lists fragrance, sulfates, formaldehyde releasers, coconut derivatives
Olay
Ultra Moisture Body Wash Shea Butter
Body wash · Lists fragrance, sulfates, coconut derivatives
Unilever
Vitalité Brillance Shampooing
Lists fragrance, fragrance allergens, drying alcohol, sulfates, formaldehyde releasers, coconut derivatives
Perricone MD
Vitamin C Ester Citrus Brightening Cleanser
Lists fragrance, fragrance allergens, sulfates, chemical UV filters, coconut derivatives
vo5
Lists fragrance, sulfates, coconut derivatives
Suave
Volume & Body Volumizing Conditioner
Conditioner · Lists fragrance, exfoliating acid
Pantene Essential Botanicals
Voluminizing Conditioner
Lists fragrance, fragrance allergens
Hair Biology
Volumizing conditioner
Conditioner · Lists fragrance, fragrance allergens, silicones
Hair Biology
Volumizing shampoo
Shampoo · Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
walmart soap 3n1
Lists fragrance, sulfates, coconut derivatives
white rain purely coconit oil body wash
Lists fragrance, sulfates, coconut derivatives
Bath & Body Works
White Tea & Sage Gentle Foaming Hand Soap with Essential Oils
Lists fragrance, fragrance allergens, sulfates, chemical UV filters, coconut derivatives
Old Spice
Whitewater
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Unilever
Zero pellicule - shampooing zinc & eau de glacier
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, silicones, formaldehyde releasers, coconut derivatives
Unilever
Жидкое мыло ЧИСТАЯ ЛИНИЯ Сила 5 трав
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
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