The common ingredients of meth —along with where they’re found and their associated dangers— include: Acetone is found in nail polish remover and paint thinner. It’s extremely flammable. Anhydrous Ammonia is found in fertilizer and some cleaners. Mixing it with other chemicals creates a toxic gas. Ephedrine/Pseudoephedrine is found in some cold medicines and diet pills. It can harm the respiratory system, nervous system, and heart in large quantities. Hydrochloric Acid is used to make plastic. It is so corrosive that it can remove rust from steel and is capable of eating away flesh. Lithium is found in batteries. It burns the skin, is highly explosive, and reacts violently with water. Red phosphorus is found on matchboxes, in road flares, and in other explosives. It is highly flammable. Toluene is found in brake fluid. It is so corrosive it can dissolve rubber. Sodium Hydroxide or lye is used to dissolve roadkill. It is corrosive and can also burn skin or cause blindness. Sulfuric Acid is found in drain cleaner or toilet cleaner. It is corrosive and can also burn the skin.