Benoquin is a topical cream that contains the active ingredient monobenzone. It is mainly used for depigmentation therapy in conditions such as vitiligo, where skin color is lost due to melanin deficiency. Benoquin works by permanently reducing melanin production in the skin cells around the affected areas, helping to lighten the skin tone. It applies directly to the depigmented parts of the skin to lighten them and obtain a uniform texture. Treatment with Benoquin requires medical supervision to manage side effects and ensure proper use for depigmentation therapy.