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Also-called-like-this: Butylated Hydroxy Toluene
What-it-does: antioxidant, preservative


It's the acronym for Butylated Hydroxy Toluene. It's a common synthetic antioxidant that's used as a preservative.

There is some controversy around BHT. It's not a new ingredient, it has been used both as a food and cosmetics additive since the 1970s. Plenty of studies tried to examine if it's a carcinogen or not. This Truth in Aging article details the situation and also writes that all these studies examine BHT when taken orally.

As for cosmetics, the CIR (Cosmetic Ingredient Review) concluded that the amount of BHT used in cosmetic products is low (usually around 0.01-0.1%),  it does not penetrate skin far enough to be absorbed into the bloodstream and it is safe to use in cosmetics.

Products with BHT

Valeant Biacna Elizabeth Arden Retinol Ceramide Capsules Avene Deep Moist Lotion Hada Labo Goku-Jyun Alpha Lifting & Firming Lotion Glysomed Eczema Control Neutrogena Body Oil - Light Sesame Formula SkinCeuticals Retinol 1.0 Maximum Strength Refining Night Cream The Ordinary Retinol 0.2% In Squalane The Ordinary Retinol 0.5% In Squalane The Ordinary Retinol 1% In Squalane Vichy Neovadiol Magistral Elixer Medik8 Retinol 3 Tr Mixa Hyalurogel Light RCMA Foundation Beauty Pie Superactive Capsules Pure Double Vitamin C & Vitamin E Serum Garnier Pure Active Sensitive Anti-Blemish Clarifying Toner Hada Labo Goku-Jyun Alpha Serum Neutrogena Deep Moisture Night Cream Neutrogena Ultra Sheer Face & Body Stick Sunscreen Spf 70 Revolution Skincare Fine Line Correcting Serum - 0.2% Retinol Rohto Hada Labo Gokujun Cleansing Oil Rouses Point Pharmaceuticals Tretinoin Cream 0.025% Vivant Skin Care Derm-A-Gel Level 1 Avon Planet Spa Radiant Gold Face Mask Tarte Amazonian Clay Full Coverage Airbrush Foundation L'Oreal Paris Elvive Extraordinary Clay Rebalancing Conditioner L'oreal Bi-Phase Micellar Water All Skin Types Neutrogena Ultra Sheer Face & Body Dry Touch Sunscreen Lotion Spf 50 Nivea Lip Butter (Blueberry Blush) QV Lip Balm Chanel Le Blanc Targeted Brightening Spot Corrector Txc Fresh Seaberry Moisturizing Facial Oil Fresh Seaberry Skin Nutrition Booster Hada Labo Tokyo Gentle Hydrating Cleanser L'oreal Age Perfect Micellar Water Mature Skin Neostrata Skin Active Retinol + Nag Complex Vanicream Lite Lotion Vanicream Moisturizing Skin Cream Avene D-Pigment Light Avene Hydrance Light Emulsion Avene Hydrance Light Hydrating Cream Avene Retrinal 0.1 Intensive Cream Avene Ysthéal Intense Anti-Wrinkle Concentrate Ducray Keracnyl Repair Cream Lipidol Cleansing Face Oil Nu Skin Ap-24® Anti-Plaque Fluoride Toothpaste PCA Skin Pigment Gel Peter Thomas Pumpkin Enzyme Mask Enzymatic Dermal Resurfacer Safi Oxywhite Pembersih Muka Cerah Sempurna SunSense Daily Face Spf 50+