REGAINE® Extra Strength Solution is clinically proven to help save thinning hair, regrow hair in men with hereditary hair loss & reverse its progression. It also contains a 5% concentration of the active ingredient minoxidil.. In clinical trials, 3 out of 5 men regrew hair Results may become noticeable in just 8 weeks Apply directly to your scalp—twice a day, every day Extra Strength Solution is licensed for hereditary hair loss in men aged 18 to 65