"i had very bad cystic acne and had to see a dermatologist. she prescribed aczone and tazorac, it did not work, it made me breakout worse.  i went back to her and she prescribed doxcycline an antibiotic and within the first week  i saw an improvement. i am on antibiotics, aczone, and tazorac, which together works awesome, my dark spots and acne scarring is fading also."