The active ingredient is minoxidil 5%.
Minoxidil Topical Aerosol 5% (Foam) is for men who have a general thinning of hair on the top of the scalp. Kirkland Signature Hair Regrowth Treatment Minoxidil Foam for Men 6 Month Minoxidil Topical Aerosol 5% (Foam) is a hair regrowth treatment for men. Kirkland Signature Hair Regrowth Treatment Minoxidil Foam for Men 6 Month 2.