Clinsol Gel (clindamycin and nicotinamide) is used to treat acne (pimples) by reducing bacteria and inflammation. Even if your acne has improved within 7 days, you should not stop the treatment abruptly unless advised by your doctor. The duration of treatment varies depending on the severity of acne and your response to the medicine. In many cases, doctors recommend using the gel for several weeks to achieve better and longer-lasting results. Stopping too early may allow acne to return. If you experience severe redness, burning or dryness, consult your doctor promptly. If your acne has cleared significantly after one week, it is best to ask your doctor whether you should continue the gel and for how long, based on your individual condition.