Follow us on our new Insta page »


What-it-does: preservative


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

Mantecorp Sabonete Líquido Facial Glycare Kamaleão Color Shampoo Mais Cor MILVA Rose Water 12 Benefits Instant Healthy Hair Treatmeant/Leave-in Cindynal Calendula Pore Toner Dalla Makeup O Poderoso Gel Ultra Hidratante Hela Beauty Sun Drops FPS30 Idraet Ferulic Serum JAPAN GALS Pure Beau Essence (Ceramide) Kamaleão Color Condicionador Mais Cor Kamaleão Color Creme De Pentear Mais Cor Sun Pharmaceutical Industries Ltd Moisturex Clenz Facial Cleanser Theraskin Papuless Zero Silver Shampoo Baby Lee Acondicionador Coco&Avena Cotton Tree Baby Wipes Non Parfum Da Minha Cor Pó Compacto Nubia.Afri Dot & Key 5% Aha Toner Skin Clarifying Liquid Exfoliant Dove Go Fresh Face Cleanser Hair Chemist Pro Growth Shampoo Makeup Artist's Choice Glycolic Acid 70% PANVEL Mini Demaquilante Bifásico Panvel Faces Portia M Pomegranate Sensitive Toner RENPURE Argan Oil Luxurious Shampoo Telepoint family Rose Scented Hand Soap UrbanBotanics Aloe Vera Gel UrbanBotanics Pure Aloe Vera Gel UrbanBotanics Pure Aloe Vera Skin/Hair Gel With Vitamin E & Natural Emollients ARAVIA Professional Lactica Exfoliate 10% Alcare Foaming Cleanser Anagel Ultrasound Gel Biocom Elastina Ampollas Dermachem Gel Antissinais - Booster Dermachem Sabonete Primer Pré-Maquiagem Dermotivin Original Erha Acneact Gentle Acne Facial Wash Helena Professional Hair Gel Htderm Intensive Depigmentation Cream Johnny B Fuddy Matte Styling Gel Mantecorp Ivy C Face Piel Cosmetics Gialur Hyaluronic Serum 1% Ravenna Água Micelar South Mane Under Eye Gels St. Botanica Pro Keratin & Argan Oil Smooth Therapy Spray Studio Selection Micellar Cleansing Water Sutra Beauty Conditioner Violetta Essential Exfoliante Gel Woolworths Gel Cleanser African Extracts Roobos Refreshing Toner Alberto Vo5 Herbal Escape Balancing Conditioner