Hair loss (alopecia) has many causes, and the right treatment depends on which one you have, so the first step is finding out why it's happening. A lot of hair loss is temporary and grows back on its own — shedding after an illness, high fever, surgery, major stress, crash dieting, or childbirth (telogen effluvium) often recovers within about 6 months once the trigger passes. Inherited pattern baldness (androgenetic alopecia), which affects most men and many women, tends to be progressive and is not usually reversible without ongoing treatment; the available medicines don't work for everyone and only keep working for as long as you use them. There is one genuine over-the-counter option (topical minoxidil); most other effective treatments are prescription medicines a doctor must choose based on the cause.
Available without a prescription — follow each label.
minoxidil 5% topical solution/foam (men) Rogaine (men's) Topical hair regrowth treatment (vasodilator) | The only FDA-recognized OTC treatment for pattern hair loss. The 5% strength is labeled for men to regrow hair on the top/crown (vertex) of the scalp — the Drug Facts label says it is NOT intended for a receding hairline or frontal baldness. Apply 1 mL twice a day directly to the scalp. For external use only; results can take about 2 to 4 months and only last while you keep using it. Label warning: for use by men only, and it may be harmful if used while pregnant or breastfeeding. Keep out of reach of children. |
minoxidil 2% topical solution (women and men) Rogaine (women's) Topical hair regrowth treatment (vasodilator) | The 2% strength is the option labeled for women with general thinning on the top of the scalp (a 5% foam is also marketed for women, used once daily). Apply the 2% solution directly to the scalp as directed twice a day. As with the men's product: external use only, regrowth builds over months and stops if you stop, and it should not be used during pregnancy or breastfeeding. Stop and ask a doctor if you get chest pain, rapid heartbeat, faintness, sudden unexplained weight gain, or swelling of the hands/feet. |
A doctor may prescribe these — not for self-treatment.
finasteride (oral) Propecia 5-alpha-reductase inhibitor | A prescription pill a doctor may prescribe to men for male pattern baldness; it is not used in women, and women who are or may become pregnant should not take or even handle crushed/broken tablets because it can harm a developing male fetus. Like minoxidil it doesn't work for everyone and only works while taken. A clinician should assess suitability and side effects — never self-start it. |
dutasteride (oral) Avodart 5-alpha-reductase inhibitor | Another 5-alpha-reductase inhibitor a doctor may consider for male pattern hair loss in men. As with finasteride, it carries pregnancy-handling cautions and requires a clinician's evaluation; it is used off-label for hair loss in some cases and is not something to obtain or use on your own. |
corticosteroids (scalp injections, topical creams, or oral) Corticosteroid / immunosuppressant | For alopecia areata (patchy autoimmune hair loss), a dermatologist may use steroid injections into the bald patches, prescription steroid creams, or short oral courses to calm the immune attack on the follicles. These are clinician-directed treatments because dose, site, and duration must be tailored and monitored — not OTC. |
antifungal medicines (oral or prescription topical) Antifungal | When hair loss is caused by a scalp fungal infection (ringworm of the scalp / tinea capitis), the underlying infection must be diagnosed and treated, usually with a prescription oral antifungal. This requires a doctor's diagnosis — antifungals only help if a fungus is actually the cause, and treating the infection is what allows the hair to grow back. |
Start by identifying the cause, because that determines the fix. If your shedding followed a clear trigger — a serious illness, high fever, surgery, major stress, rapid weight loss, or childbirth — it is often temporary (telogen effluvium) and tends to recover on its own over several months; the main job is to be patient, eat well, correct any iron, thyroid, or vitamin deficiency a clinician finds, and be gentle with your hair. For inherited pattern thinning on the top of the scalp, OTC topical minoxidil is the self-care mainstay: men can use the 5% product for crown thinning (it is not meant for a receding hairline), and women should use the product labeled for women. Be realistic — minoxidil and the prescription medicines don't help everyone, can take a few months to show effect, and only work while you keep using them; stopping reverses the gains. Prescription options (oral finasteride or dutasteride for men, steroids or JAK inhibitors for alopecia areata, antifungals for scalp infection) are chosen by a doctor based on the diagnosis and are never appropriate to self-start. For appearance and confidence in the meantime, wigs, hairpieces, gentle styling, and support from groups like alopecia charities are reasonable. See a GP before paying a commercial hair clinic, so you understand what's actually causing your loss.
See a doctor before starting any treatment if you're worried about hair loss, so the cause can be identified first. Make a routine appointment if your hair is thinning in an unusual pattern, you develop bald patches, you're losing hair rapidly or at a young age, or you have itching, pain, redness, scaling, sores, or signs of infection on the scalp. Also get checked if hair loss comes with other symptoms such as unexplained weight change, fatigue, or feeling unwell, since it can be a sign of thyroid disease, anemia, or another underlying condition that needs treatment. Hair loss after starting a new medication, or hair coming out in handfuls, is worth discussing with your clinician. There's rarely an emergency, but seek prompt medical care for a rapidly spreading rash, a clearly infected (hot, swollen, pus-filled) scalp, or signs of a serious allergic reaction. If you use minoxidil, stop and contact a doctor if you get chest pain, a fast or irregular heartbeat, dizziness or fainting, sudden weight gain, or swelling of the hands and feet.
General reference, not medical advice, and not a substitute for your doctor or pharmacist. The right choice depends on your symptoms, health conditions, age, and other medicines — always read each label and confirm before taking anything.
JAK inhibitors and other immune therapies Janus kinase (JAK) inhibitor / immunotherapy | For severe or extensive alopecia areata, a specialist may prescribe newer oral JAK inhibitors or use topical immunotherapy to target the immune response. These are powerful prescription medicines with significant monitoring needs and are started only under a dermatologist's care after the diagnosis is confirmed. |