Scabisin is a medication used to treat scabies, a skin condition caused by infestation with the Sarcoptes scabiei mite. The active ingredient, usually permethrin or another similar agent, works by killing the mites and their eggs, helping to alleviate symptoms like itching and irritation. It's typically applied to the skin as a cream or lotion, covering affected areas and often the entire body, depending on the instructions provided. As with any medication, it's important to follow your healthcare provider's directions for use.