A good lice shampoo will kill all the lice after just one treatment. The problem is many strains of head lice have become resistant to pesticide based lice shampoo. Why would you want to put pesticides on your child's head anyway? An enzyme based lice shampoo will always be effective because the lice can not become resistant to it. The enzyme will always break their shell.Lice Prevention Shampoo
A good lice shampoo will kill all the lice after just one treatment. The problem is many strains of head lice have become resistant to pesticide based lice shampoo. Why would you want to put pesticides on your child's head anyway? An enzyme based lice shampoo will always be effective because the lice can not become resistant to it. The enzyme will always break their shell.