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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 Cindynal Calendula Pore Toner Dalla Makeup O Poderoso Gel Ultra Hidratante JAPAN GALS Pure Beau Essence (Ceramide) Cotton Tree Baby Wipes Non Parfum Da Minha Cor Pó Compacto Nubia.Afri Dot and key 5% Aha Toner Skin Clarifying Liquid Exfoliant Dove Go Fresh Face Cleanser Telepoint family Rose Scented Hand Soap Dermachem Gel Antissinais - Booster Dermotivin Original Helena Professional Hair Gel Mantecorp Ivy C Face African extracts Roobos Refreshing Toner Bruno Vassari Extra Rich Cleansing Foam Dermachem Gel Antioleosidade Ácido Salicílico Dermachem Dermur Azuleno Dot & Key Booty Polish Walnut & Coffee Dot & key AHA + BHA HYDRO PEEL EXFOLIATING SERUM Dot & key Glow Revealing Vitamin C Serum Concentrate HANAJIRUSHI Deep Cleansing Lotion Super Moist Kueshi Waterproof Makeup Remover Makeup Artist's Choice Gly-Luronic Miracle Correction Serum Menarini Acnelak 4In1 Pimple Care Face Wash Skin doctors Instant Eyelift Beauty Formulas Tea Tree Face Mask Caviahue Serum C Equate Kids 3-In-1 Shampoo, Conditioner, & Body Wash, Unscented 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 Biobellus Glicopeel Cat Makeup Lagrimas De Unicórnio 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 Himalaya Herbals Light Hydrating Gel Cream Max Block Sunscreen Sunscreen Lotion Broad Spectrum Spf 30 Oxecure Facial Liquid Cleanser 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 Geniol Shampoo Argan Iba halal Aloe Aqua Face Wash Intraceuticals Cleansing Gel