A 1% minoxidil lotion was used to treat 670 male patients affected by androgenetic alopecia. Of the 430 patients who completed the 6 months' treatment, only 78 (18%) had good results. A 1-year follow-up after the drug was suspended showed that the regrowth was present only in 33% of the patients who had had good results, i.e. 6% of the 430.
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