Before using benzoyl peroxide, gently wash the skin with soap and water. Blot your skin dry. Use it once a day at bedtime. Your doctor may tell you to use it once a day at first and then work up to two times a day. If benzoyl peroxide doesn't seem to help after two months or is very irritating to your skin, get advice from your doctor.
Antibiotics can be very effective for acne.
They can be taken by mouth or used in a lotion, cream or gel on the skin. Again, be sure to apply the lotion, cream or gel over the whole area where you have blemishes. It's usually rubbed onto the skin once a day. Be sure not to get it near your eyes, mouth and the area under your nose. It may seem at first that tretinoin is making your acne worse.