Lindane, an insecticide found in some head lice treatments such as shampoos, has been linked to cancer risk. The World Health Organization has classified it as 'carcinogenic to humans' after a scientific review.
Lindane, an insecticide found in some head lice treatments such as shampoos, has been linked to cancer risk. The World Health Organization has classified it as 'carcinogenic to humans' after a scientific review.