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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 Cotton Tree Baby Wipes Non Parfum Dove Go Fresh Face Cleanser Dermotivin Original Mantecorp Ivy C Face Bruno Vassari Extra Rich Cleansing Foam HANAJIRUSHI Deep Cleansing Lotion Super Moist Makeup Artist's Choice Gly-Luronic Miracle Correction Serum Skin doctors Instant Eyelift J.R. Watkins Liquid Hand Soap - Lemon Living proof No Frizz Conditioner Montarbo Skincare Advanced Exfoliating Cleanser SSCPL Herbals Detan Face Pack Del Indio Papago Tepezcohuite Facial and Body Cream Collagen & Vitamin E Himalaya Refreshing And Clarifying Toner Max Block Sunscreen Sunscreen Lotion Broad Spectrum Spf 30 grace & stella Aloe Vera Gel Iba halal Aloe Aqua Face Wash Ruby Rose Sérum Revitalizante Ice Pearl Hidratante Skin B5 Acne Control Cleansing Mousse V05 Detox With Micellar Water Purifying Shampoo Aesop Purifying Facial Cream Cleanser Bruno Vassari Scrub & Mask Dr. C. Tuna Tea Tree Series Face Wash Himalaya Youth Eternity Night Cream MBH DERMACARE Oil Control Acne Cleanser Natio Pore Unclogging Face Scrub Schauma 7 Трав Simple Foaming Cleanser Smartly Unscented Gentle Facial Cleanser Softsoap Crisp Clean Antibacterial Liquid Hand Soap Topicrem Ph5 Gentle Milk Shampoo Aesop Amazing Face Cleanser Asepxia Acne Facial Cleanser Australian Pure Beauty Moisturiser Sensitive Sorbolene Dr Sebagh Serum Repair Dr. Teal's Shea Butter & Almond Oil Body Wash Hada Labo Mild & Sensitive Skin Face Wash Himalaya Herbals Purifying Neem Foaming Face Wash Natura Loção Hidratante Protetora Safi Age Defy Skin Refiner Suave Ocean Breeze Shampoo Ahava Time To Clear Refreshing Cleansing Gel BIOSILK Silk Therapy Conditioner Dr. Medica Dermatological Anti-Acne Cleanser Hada Labo Unscented Hada Labo Tokyo Anti-Aging Face Mask Herbal Essences Hello Hydration Moisturizing Conditioner With Coconut Essences Himalaya Herbals Puryfing Neem Face Wash Joelle Ciocco Lotion Lactee/Perfecting Lotion Lotus Herbals Safe Sun Uv Screen Matte Gel With Spf 50