"i had suffered for ~3 yrs with adult onset acne when i finally decided to see a dermatologist. my acne was gradually getting worse. i was prescribed oral antibiotics, topical antibiotics for the am and tretinoin for the pm. the first few months on this product were horrible. my epidermis literally was sloughing off. i would experience a burning sensation with its application and when applying moisturizer, but it was not so intense that i could not tolerate it. i was so embarrassed to be in public. i googled reviews of the product every night for months just for reassurance that this was the right course of action. i totally doubted its capabilities. the encouraging reviews that stated it would be worth it kept me going. they were so right."