Why does HL 7 Shampoo have to be applied to DRY hair?
Maldison vapourises when mixed with water and is breathed in by lice. This paralyses the central nervous system of head lice and nits. They don’t stand a chance of survival. It is important to apply the shampoo treatment to DRY hair as head lice shut their breathing holes once they get wet and can keep these shut for 30 minutes.