Vamousse Shampoo Protects against head lice. Protect your child: When there is a head lice outbreak at school, from re-infestation following head lice treatment & during school holidays, on play dates, or outings. Protect your family: when a family member has or has had head lice infestation, when there is a head lice outbreak at school. Vamousse works: when used as directed, it prevents head lice by killing them before they lay eggs.