What makes Enzyme Shampoo For Lice so effective is its natural approach. Unlike traditional lice treatments that use strong chemicals, enzyme shampoos rely on enzymes to break down the outer shell of lice and their eggs, making them much easier to remove. What makes Enzyme Shampoo For Lice so effective is its natural approach. Unlike traditional lice treatments that use strong chemicals, enzyme shampoos rely on enzymes to break down the outer shell of lice and their eggs, making them much easier to remove. What makes Enzyme Shampoo For Lice so effective is its natural approach. Unlike traditi