Clindamycin phosphate is a medication used to treat acne by decreasing the number of acne lesions. It is an antibiotic that works by stopping the growth of bacteria on the skin or killing it to prevent symptoms of acne. Clindamycin phosphate is available in different forms such as gel, lotion, and topical solution, and it is applied only on the skin. It is important to follow all directions on the product package or as directed by a doctor when using this medication. It is also important to inform the doctor or pharmacist if there are any allergies to clindamycin or lincomycin, or if there are any other allergies. Topical clindamycin will not cure acne, but it can help keep it under control. Therefore, it is important to keep using this medicine for the full time of treatment, even if symptoms begin to clear up after a few days.