Duda's Red Hot Devil Lye 99+% Pure Sodium Hydroxide / Caustic Soda Beads Packaged in a safe and convenient, wide mouth container with a foam lined child safety cap for prolonged freshness. Container is anti-static. Some of the Many Common Uses: Drain Cleaning (dissolves fats and oils into soaps, eats organic material) Soft Pretzel Making Soap Making Peeling of fruits & vegetables Cocoa Processing Biodiesel Production Cleaning grease from grease traps, exhaust hoods and fryers Olive Curing Paint Removal Aluminum Etching Relaxer to help straighten hair (users must be cautious of potential burns when using for this method)