Promote hair growth with the rich formula of the Kirkland Signature Extra Strength Minoxidil 5% treatment made for men. The active ingredient of this Kirkland extra strength treatment is 5% Minoxidil that nourishes the hair follicle to facilitate the hair growth process. Kirkland hair loss treatment takes about 2 - 4 months’ time for effective results to start showing. Just 1 ml of the Kirkland Signature Minoxidil 5% treatment has to be applied twice daily to give you the best results possible. Treat thinning hair and balding with Kirkland hair loss treatment. Compare with the active ingredient in Rogaine for Men.