Dermatology answers

Direct medical answers with practical timelines, safety points and original references.

• How long does minoxidil take to work? — Do not judge minoxidil after only a few weeks. With 5% minoxidil solution used twice daily, some men may begin to notice early improvement after about 2 months, while others may need 4 months or longer before the difference is clear. In women with female pattern hair loss, it may take 6–12 months of continuous use to judge how well minoxidil is working.