"i have suffered from acne for about 5 years, and have tried many many over the counter products. nothing worked. so i went to my dermatologist and she prescribed me epiduo, along with some other products. within 3 days, i could tell a difference in my acne. then, after a week, my face began burning when i applied the epiduo, and 
peeling. i continued using the epiduo and the burning and peeling stopped after a week. i&#039;ve been on it for 3 weeks now and my acne is going away. but let me warn you, do not over use this product. only use once a day."