Two popular hair regrowth treatments are minoxidil solution and foam. Minoxidil is a vasodilator that is used to help hair growth in the treatment of male pattern baldness. It is not used for baldness at the front of the scalp or receding hairline in men. The foam and 2 percent minoxidil solution are also used to help hair growth in women with thinning hair. Minoxidil topical solution 5% for men provided more hair regrowth than minoxidil topical solution 2% in clinical studies with mostly white men aged 18-49 years with moderate degrees of hair loss
. The active ingredients in these products are minoxidil 5%, alcohol, propylene glycol, and purified water
. When choosing hair growth products, some of the most effective ingredients to look for include dihydrotestosterone (DHT) blockers and inhibitors, iron, collagen, niacin, and caffeine
