A: Enzymes in stain remover formulations can be used to break down specific stains. Proteases will break down proteins by breaking the larger molecules into smaller, soluble chunks that are more easily removed by our detergents. Human sweat stains can also be removed by proteases. Other molecules that can be broken down by enzymes include fats, broken down by lipases, and starch, broken down by amylases. Each enzyme type works on a different stain and once they find them they will act upon them.