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Methylchloroisothiazolinone

icky
What-it-does: preservative

Details

This totally unpronounceable ingredient (let’s take a shortcut: MCI) is a super effective preservative with both antibacterial and antifungal effects that works at very low concentrations. 

The bad news with it though is that it can sensitize the skin easily (it’s a so-called non-fragrance allergen). It’s not permitted to be used alone, but only with its BFF, methylisothiazolinone (MI), another icky preservative. Together they have a broad spectrum antimicrobial effect but are permitted to be used only in rinse-off products (under 0.0015%).

Products with Methylchloroisothiazolinone

Dove Go Fresh Face Cleanser Telepoint family Rose Scented Hand Soap Erha Acneact Gentle Acne Facial Wash Helena Professional Hair Gel Bruno Vassari Extra Rich Cleansing Foam Cotton Tree Baby Wipes Non Parfum Icono Acido Hialurónico Extracto En Gel Skin doctors Instant Eyelift St. Botanica Argan Oil Ultra Nourishing Body Wash elf cosmetics Clear Lash Brow Mascara Beauty Formulas Tea Tree Face Mask Caviahue Serum C Dermotivin Original Dove Dove intense repair shampoo Equate Kids 3-In-1 Shampoo, Conditioner, & Body Wash, Unscented SSCPL Herbals Detan Face Pack DermDoc Skin Brightening Face Wash G&G teint uniforme Lightening Beauty Oil Guardian Goat’S Milk Moisturising Bath Lure Facial Serum Ácido Hialuronico Oxecure Facial Liquid Cleanser Salon Line Condicionador S.O.S Bomba Skin Authority Daily Cleanser Touch me! Please Face Wash Foam With Full Fat Milk not your mother's Curl Talk Activating Mousse not your mother's Curl Talk Curl Activation Mousse Arvea Gel Aloe Vera Beauty Formulas Foaming Facial Wash Beauty Formulas Vitamin E Fancy Handy Face Cleansing Foam Rice Oil Geniol Shampoo Argan Ibis Hair And Body Wash Intraceuticals Cleansing Gel Living proof No Frizz Conditioner Montarbo Skincare Advanced Exfoliating Cleanser Old Spice Swagger Body Wash Prodermic Mega Tonic Skala Creme De Tratamento Café Verde E Ucuuba St. Botanica Anti Oxidant Boost Serum + Moisturizer Suave Daily Clarifying Conditioner Suave Tropical Coconut Infused With Extract & Vitamin E Conditioner Suave Waterfall Mist Conditioner V05 Detox With Micellar Water Purifying Shampoo Aesop Purifying Facial Cream Cleanser Alluskin Purifying Cleanser Beardo Turmeric Clay Mask Bruno Vassari Scrub & Mask Cat Makeup Lagrimas De Unicórnio Curatio Fash X Face Wash Dr. C. Tuna Tea Tree Series Face Wash Freeman Lemon Mint Oil Absorbing Clay Mask