Take Charge of Your Hair Regrowth Compare Kirkland Signature to the Active Ingredient in Rogaine Extra Strength for Men. Kirkland SignatureTM Extra Strength for Men Minoxidil Topical Solution USP, 5% Hair Regrowth Treatment regrows more hair than 2% Minoxidil Topical Solution. Results may occur at 2 months. Kirkland SignatureTM Extra Strength for Men Minoxidil Topical Solution USP, 5% Hair Regrowth Treatment is for men who have a general thinning of hair on the top of the scalp. Not intended for frontal baldness or a receding hairline. Some people may experience a dry, itchy scalp and irritation. Minoxidil is the #1 Dermatologist Recommended OTC hair regrowth treatment active ingredient* *In the U.S. Source: Symphony Health Solutions For men who have general thinning of hair on the top of scalp Not Intended For Frontal Baldness OR Receding Hair Lines