Follow us on our new Insta page »

Iodopropynyl Butylcarbamate

What-it-does: preservative


It's one of those things that help your cosmetics not to go wrong too soon, aka a preservative. Its strong point is being effective against yeasts and molds, and as a nice bonus seems to be non-comedogenic as well.

It is safe in concentrations of less than 0.1% but is acutely toxic when inhaled, so it's not the proper preservative choice for aerosol formulas like hairsprays. Used at 0.1%, Iodopropynyl Butylcarbamate has an extremely low rate of skin-irritation when applied directly for 24 hours (around 0.1% of 4,883 participants) and after 48 hours that figure was 0.5%, so it counts as mild and safe unless your skin is super-duper sensitive.

Show me some proof

  • Lanigan, Rebecca S. "Final report on the safety assessment of iodopropynyl butylcarbamate (IPBC)." International Journal of Toxicology 17.5_suppl (1998): 1-37.

Products with Iodopropynyl Butylcarbamate

Formuly Piel Hydramax Agua Thermal Cetaphil Gentle Cleansing Cloths Premium Nature Aloe Vera Gel WNF Geranium Vegetable Thermal Water Designer Dust Co EcoStarDust biodegradable glitter gel Emergencia Conditioner Liz Milano Wrinkle Fighter Rhea Hyaluronic Acid Serum Wavelength Ultrasound Gel standard. Lactic Acid 5% Toner With Aha Toner Barbour’s Gel Facial Antissinais CULLUN Tropical Bio-Toning Essence Equate Beauty Makeup Remover Wipes HydroSkinCare Ha² Serum Lidherma Fórmula jabón liquido Mecca Cosmetica To Save Face Spf50+ Superscreen Oxybenzone Free Formula Mehron Mixing Liquid Sportsgirl Beauty Spot Serum - Blemish Recovery Serum Violetta Good Night Cluny Loción Tónica Todo Tipo De Piel Hick’s Total Transformations Hick’s Edges IMAGES Niacinamide Serum Mannine Health Benethelium Hydrolic Acid And Beta-glucan MasterGlam Amaze Brow Trio With Enhancing Serum PCA Skin Weightless Protection Spf 45 Siluma Micellar Water Sportsgirl Beauty Vitamin Sea - Clay Face Mask Stephanie Beaute Aftershave Freshness Gel Sandalwood Stephanie Beaute Moisturizing Cream Sandalwood Vichy Deodorant 48 Hour Soothing Anti-Perspirant For Sensitive Skin Vichy Deodorant Anti-transpiratie Dry Touch 24h Stick Yeauty Eye Pad Mask Deep Hydration Almar sales Co. Simply Bootiful Makeup Removing And Cleansing Wipes BioAqua Niacinamide Moisturizing Essence BioAqua Wonder Blueberry - Lotion Toner CULLUN Gentle Facial Cleansing Gel CÉLETEQUE DERMOSCIENCE ™ Hydration Alcohol-Free Toner Dove Micellar Water Shower Gel Sensitive Skin EltaMD Uv Physical Tinted Face Sunscreen Spf 41 Honed Beauty Niacinamide Facial Serum Inature Aloe Vera Max Gel Johnny B Mode "Lucky Boy" Styling Gel KitosCell Gel Koa Glow Elixir Lidherma Aquashot Micellar Water Lyphos Beauty Crema Hidratante Clé-o MINISO Olive Moisturizing Spray Olay Resurfacing Peel Vitamin C + Aha Olay Vitamin C Resurfacing Mask & Resurfacing Peel (Step 2) Simple Kind To Skin Refreshing Face Wash