In order to promote hair growth, minoxidil solution and foam are used to treat male pattern baldness. It is not utilized to treat male receding hairlines or frontal balding. Women with thinning hair can use the foam in combination with a 2 percent minoxidil solution to promote hair growth. The group of medications known as vasodilators includes minoxidil for women. How minoxidil promotes hair growth is unknown. Hair loss after childbirth, rapid or uneven hair loss, or hair loss without apparent cause (for instance, if there is no family history of the condition) are not treated with this medicine. If you are 18 years of age or younger, do not use this product.