12 Foam Canisters, For External Use Only, For Use By Men Only^12 bottles^12 month supply Minoxidil is the #1 Dermatologist recommended OTC hair regrowth treatment active ingredient 12 Foam Canisters, For External Use Only, For Use By Men Only Minoxidil is the #1 Dermatologist recommended OTC hair regrowth treatment active ingredient Kirkland Signature Minoxodil topical Aerosol 5% is for men who have a general thinning of hair on the top of the scalp (vertex only). Minoxidil has been show to regrow hair in men with low to moderate hair loss. Please see images for a diagram to determine if this product will treat the degree of your hair loss.