About Kirkland Signature Minoxidil Solution. Minoxidil Topical Solution USP 5% for Men, Extra Strength Hair Regrowth Treatment, is a topical treatment used to help regrow hair on the top of the scalp. It is not intended for frontal baldness or receding hairline. This unscented product reactivates hair follicles to stimulate regrowth and is clinically proven […]