Permethrin is a pediculicide available in over-the-counter (OTC) medicines that kill head lice and their eggs (nits) and prevent re-infestation for up to 14 days. The active ingredient permethrin is for head lice only and is not intended to treat pubic lice (crabs). Permethrin can be found in single-ingredient head lice treatments. Permethrin is approved […]

Learn More