It is quite effective for some people.. but I tried some about a year ago and noticed absolutely nothing
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"The individual has always had to struggle to keep from being overwhelmed by the tribe. He will be lonely often and sometimes frightened. But no price is too high to pay for the privilege of owning yourself" - Nietzsche
Vitamin B-5, taking in the dosages that are effective for fighting acne is pretty expensive, 5-12g spread throughout the day. That gets really expensive over time but lots of people are really successful with it.
Try it.. if it doesnt give you the results you're looking for then see a doc about some antibiotics (eg. doxycycline) with Retin-a
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"The individual has always had to struggle to keep from being overwhelmed by the tribe. He will be lonely often and sometimes frightened. But no price is too high to pay for the privilege of owning yourself" - Nietzsche