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BHT

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

Details

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

Eucerin Atopicontrol Cleansing Oil Miss Lary Cleasing Oil Theraskin Theracne Barra Trixie Cosmetics Just A Girl Blush Palette Acnelyse Tretinoin %0.025 Acnelyse Tretinoin %0.05 Arbell Crema Gel Contorno De Ojos CTS CHEMICAL INDUSTRIES Ret-Avit Cream 0.05% Cordes Vas Cordes Vas Creme (0.05 Tretinoin) Curalene Petroleum jelly Dermatouch 100% Plant-derived Squalane Exact-RX Sodium Sulfacetamide July Facial Mask Labotrat Esfoliante Maracuj√° Mylan Tretinoin 0.025% Gel Neutrogena Ultra Sheet Dry Touch Spf 55 NorthstaRX Tretinoin Cream Usp 0.05% Organic Harvest Happy Lips Pomegranate Lip Balm Stiefel Stieva-A Tretinoin Cream 0.05% Sunmax sensitive fps 50 Taro Tretinoin Cream (.025%) Tracta Lip Balm Esfoliante Vaseline Original Protecting Jelly Vivier Corrector 2 Westminster Pharmaceuticals Sodium Sulfacetamide 10% And Sulfur 5% Cleanser Ziaja Med Izotziaja virtue Flourish Minoxidil Topical Aerosol 5% Hair Regrowth Treatment For Women Apostrophe Tretinoin Aurelderma Lumiedge Skin Gel For Sheer Radiance Aveeno Ultra-Light Sensitive Skin Mineral Sunscreen Bath & Body Works White Tea And Ginger Shower Gel Belita Young Skin Instant Cream For Problem Facial Areas Cifarma Regenerador E Hidratante Labial Probentol Deliplus Serum Despigmentante Eucerin Ultra White Therapy Body Lotion SPF7 EverFresh Original Petroleum Jelly Farmax Protetor Solar Sunless Fps 15 GSK Stieva-A Cream Hedge & Hedge Pharmaceutical LLP Tretinoin Cream USP Hollywood By Dr. Rey Anti-Aging Facial Creme Kirkland Minoxidil 5% Kirkland Signature 5% Minoxidil Foam L'Oreal Micellar Water Complete Cleanser Normal To Oily Skin Mandom Petroleum Jelly Neutrogena Ultra Sheer Drytouch Sunblock SPF70 Nizoral 1% Anti-dandruff Treatment Nizoral Ketoconazole Anti Dandruff Shampoo Obagi Blender Obagi Clear