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What-it-does: preservative

Official CosIng Information


As you may guess, if something is only recommended in products that you rinse off (cleansers and shampoos), then it’s probably not the best ingredient for the skin.

Methylisothiazolinone (MI) is a preservative that' super efficient against bacteria at surprisingly low concentrations. The problem with it though is that it can also sensitize and irritate the skin quite easily when it comes in leave-on formulas.

Currently, some countries are considering to ban it entirely (like Denmark) and the permitted use level is very low (under 0.01%). Luckily there are plenty of products on the market with other preservative options so if you are a better safe than sorry type it's probably best to avoid it. 

Products with Methylisothiazolinone

MILVA Rose Water JAPAN GALS Pure Beau Essence (Ceramide) Cotton Tree Baby Wipes Non Parfum Da Minha Cor Pó Compacto Nubia.Afri Dove Go Fresh Face Cleanser Telepoint family Rose Scented Hand Soap Dermotivin Original Helena Professional Hair Gel Mantecorp Ivy C Face African extracts Roobos Refreshing Toner Bruno Vassari Extra Rich Cleansing Foam Dermur Azuleno HANAJIRUSHI Deep Cleansing Lotion Super Moist Makeup Artist's Choice Gly-Luronic Miracle Correction Serum Skin doctors Instant Eyelift Caviahue Serum C Hada Labo Shirojyun Clear Lotion J.R. Watkins Liquid Hand Soap - Lemon Living proof No Frizz Conditioner Montarbo Skincare Advanced Exfoliating Cleanser SSCPL Herbals Detan Face Pack Andes Nature Cosmetic Snail Extract Cream Davines This Is A Sea Salt Spray Del Indio Papago Tepezcohuite Facial and Body Cream Collagen & Vitamin E Himalaya Radiant Glow Fairness Cream Himalaya Refreshing And Clarifying Toner Max Block Sunscreen Sunscreen Lotion Broad Spectrum Spf 30 grace & stella Aloe Vera Gel not your mother's Curl Talk Activating Mousse not your mother's Curl Talk Curl Activation Mousse Garnier Pure Active Foam Iba halal Aloe Aqua Face Wash Natio Dual Action Cleanser & Toner Old Spice Swagger Body Wash Prodermic Mega Tonic Ruby Rose Sérum Revitalizante Ice Pearl Hidratante Skin B5 Acne Control Cleansing Mousse Suave Daily Clarifying Conditioner Suave Waterfall Mist Conditioner V05 Detox With Micellar Water Purifying Shampoo Aesop Purifying Facial Cream Cleanser Alluskin Purifying Cleanser Bruno Vassari Scrub & Mask Dr. C. Tuna Tea Tree Series Face Wash Fancy Handy Face Cleansing Foam Rice Oil Himalaya Youth Eternity Night Cream Love beauty and planet Coconut Water & Mimosa Flower Conditioner MBH DERMACARE Oil Control Acne Cleanser Natio Pore Unclogging Face Scrub Safi Pelembap Muka Kulit Lembut Dan Berseri