The active key component present in Pernil 5% Lotion is permethrin 5% w/w, which is an antiparasitic agent.

Follow your doctor’s instructions on the dosage and timing of this medication to ensure safety. For scabies, apply a thin layer to the entire body, excluding the face and scalp unless advised otherwise. Leave it on for 8 to 12 hours, then wash it off. For head lice, if prescribed, apply it to the scalp and hair, leave it on as advised, then rinse thoroughly and comb out lice and eggs. Avoid contact with the eyes and nose, and in case of accidental contact, rinse thoroughly with water.