Q-P Lindane 0.1% Lotion is a medicated head application containing 0.1% Lindane as the active ingredient. This prescription medication comes in a 200mL bottle and is used for treating certain parasitic infestations of the scalp. This is a prescription medication that should only be used under the direction and supervision of a healthcare provider. The product requires careful application to the scalp area as directed. The 200mL amber bottle helps protect the medication from light exposure. As with any medication, follow your doctor's instructions carefully regarding proper usage, dosage and duration of treatment.