My daughter just started using this today. She's been seeking treatment for moderate acne for 5 years now - tried many different regimens, including Dan's. Now she's on atralin at night, aczone in the morning and taking 100 mg. of bactrim twice a day. She was also told to use Neutrogena Oil Free Wash twice a day. Let's hope this works. She's just coming off differin - which worked for about 8 months - then her acne really flared up. Any advice???