BHA butylated hydroxyanisole is an antioxidant, preservative used in food, food packaging, animal feed, cosmetics, rubber, petroleum products. BHA is commonly used in medicines, isotretinoin, lovastatin, simvastatin. The State of California, has listed it as a carcinogen. It's a preservative found in potato chips, lard, butter, cereal, instant mashed potatoes, preserved meat, beer, baked goods, dry beverage mixes, dessert mixes, chewing gum, rubber, petroleum products, wax food cartons & other packaging.