Perfect hair 5% Minoxidil for men is proven to regrow hair among men with thinning hair or hair loss * Retinol (Vitamin A) promotes normal functioning of the sebaceous glands and eliminates excessive DHT containing sebum which can interfere with proper growth of hair follicles. Retinol also enhances the scalp absorption of active ingredients. * Works on the entire scalp, including frontal frontal receding hairline * Noticeable thicker and longer hair and hair regrowth in as little as 6 to 8 weeks. * It is manufactured by a cGMP compliant facility in the USA. We conduct assay testing, identity testing, and micro testing for each batch to ensure the concentration and active ingredient is present, within spec, and follows USP standards & guidelines.