What pattern hair loss is

Androgenetic alopecia affects a large share of men and women as they age. In genetically susceptible follicles, a hormone called dihydrotestosterone (DHT) gradually miniaturizes the hair — each growth cycle produces a finer, shorter strand until the follicle stops producing visible hair. In men this usually shows up as a receding hairline or thinning crown; in women it more often appears as a widening part with overall thinning, while the hairline stays put.

Because the process is gradual and progressive, treatment works best when started early — it is far easier to keep the hair you have than to regrow hair that is already gone. It also matters that pattern hair loss is the correct diagnosis: sudden, patchy, or rapid shedding can signal other conditions (thyroid problems, iron deficiency, autoimmune alopecia areata, or post-illness shedding) that need different care. A clinician should confirm the cause before you start treatment.

The two FDA-approved treatments

Despite the crowded market of serums and supplements, only two medications are FDA-approved for androgenetic alopecia:

• Oral finasteride (men only): a daily prescription tablet that lowers DHT. In clinical studies it slowed further loss for most men and produced some regrowth in many, with improvement seen as early as three months.
• Topical minoxidil: an over-the-counter solution or foam, approved for both men and women, that stimulates follicles and extends the hair's growth phase. In the original studies of 2% solution, about 26% of men reported moderate-to-dense regrowth after four months versus 11% on placebo.

Several other options you'll see from telehealth providers — oral minoxidil, topical finasteride, dutasteride, and combined finasteride-plus-minoxidil sprays — are prescribed off-label or compounded, meaning they are not FDA-approved for hair loss in those forms. Some have supporting research, but the evidence base is thinner, which is worth knowing before you pay a premium for them.

Is treatment right for you?

Prescription hair loss treatment may be worth discussing with a clinician if you:

• Have gradual thinning at the crown, hairline, or part line — the typical pattern-loss picture
• Have a family history of pattern baldness and want to act early
• Are comfortable committing to daily, ongoing use — results reverse if you stop
• Have had other causes of hair loss ruled out, or are willing to have a clinician evaluate them

Treatment is generally not the right first step if your shedding is sudden or patchy, if you are pregnant or may become pregnant, or if you expect a full restoration of lost hair — medication maintains and modestly improves; it does not rebuild a hairline that has been gone for years.

What results to realistically expect

Hair grows slowly, so treatment timelines are measured in months, not weeks:

• Weeks 2–8: Some people notice a temporary increase in shedding with minoxidil — usually a sign follicles are cycling into a new growth phase
• Months 3–4: Shedding typically slows; early regrowth may begin
• Months 6–12: The window dermatologists recommend before judging whether a treatment is working for you
• Ongoing: Benefits continue only with continued use — stopping finasteride typically leads to renewed shedding within weeks, and regrown hair is lost over the following year

Individual responses vary widely. Some people see meaningful thickening; others mainly hold the line on further loss — which is itself the primary goal of treatment.

Side effects and safety

Both medications are generally well tolerated, but neither is side-effect-free, and honest providers say so up front.

• Finasteride: In trials, a small percentage of men reported decreased libido, erectile dysfunction, or ejaculation problems. These usually resolve after stopping, though persistent symptoms have been reported. Finasteride is not for women: it is contraindicated in women who are or may become pregnant because it can cause abnormalities in a male fetus, and pregnant women should not even handle crushed or broken tablets.
• Minoxidil: The most common issues are scalp irritation, dryness, itching, and unwanted facial hair growth where the product migrates. Oral minoxidil (off-label) can cause body-hair growth, fluid retention, and heart-rate changes, which is why it requires clinician supervision.

Review your full health history with the prescribing clinician, and report side effects promptly rather than quietly stopping treatment.

Hair loss treatment for women

Women's options differ from men's in important ways. Topical minoxidil (2% or 5%) is FDA-approved for female pattern hair loss and is the most commonly recommended starting treatment for women. Finasteride is not FDA-approved for women — a 12-month trial in postmenopausal women found the standard 1 mg dose ineffective — and it must not be used by women who are or may become pregnant.

Some clinicians prescribe off-label options such as spironolactone for women with hormone-related thinning. Because female hair loss is more often linked to treatable underlying causes — thyroid conditions, low iron, recent childbirth — a proper workup matters even more before starting medication. Postpartum shedding, for example, usually resolves on its own without treatment.

How online prescribing works

The telehealth providers compared on this page follow a similar process: you complete a health questionnaire (and usually upload photos of your scalp), a licensed clinician reviews it, and if treatment is appropriate, a prescription ships to your door on a subscription basis. Most include ongoing messaging with the clinical team so you can report side effects or adjust your plan.

The model works well for straightforward pattern hair loss. Its limitation is that no one physically examines your scalp — so if your hair loss is sudden, patchy, painful, or accompanied by other symptoms, an in-person visit with a dermatologist is the better first step.