Why hair loss happens
The most common cause of hair loss in men — and a frequent cause in women — is androgenetic alopecia, better known as male- or female-pattern hair loss. It's driven largely by DHT (dihydrotestosterone), a hormone that gradually shrinks hair follicles over time, leading to thinning, a receding hairline, or a widening part. Genetics play a big role, which is why pattern hair loss often runs in families. The good news: because the process is gradual, starting treatment early gives you the best chance to keep the hair you have.
The treatments proven to help
Most evidence-based hair-loss treatment comes down to a few actives. Finasteride and dutasteride are prescription medicines that lower DHT to slow loss and help regrow hair. Minoxidil is a topical (and sometimes oral) treatment that supports growth through a separate mechanism, and is the active many people know from over-the-counter products. These are often combined under medical guidance. For a side-by-side look, read finasteride vs minoxidil.
Starting treatment online
You no longer need an in-person visit to get started. Telehealth providers let you complete a short medical intake, have a licensed clinician review it, and — if appropriate — ship prescription treatment to your door. Providers differ in what they offer and who they serve: see our ranked best hair-loss providers, or compare two directly in Maximus vs Happy Head.
Setting realistic expectations
Hair-loss treatment rewards patience. It typically takes several months of consistent use — often 3 to 6 — before visible changes appear, and it's normal to see some early shedding as new growth cycles begin. Because these treatments work by maintaining an active growth environment, stopping them generally reverses the gains. For the full timeline, read how long hair-loss treatment takes to work.
What To Know Before Starting GLP-1 Treatment
Before starting GLP-1 treatment, it's important to understand a few key things. These medications require a prescription from a licensed clinician and aren't suitable for everyone. Some people may experience side effects, especially during the first few weeks as the body adjusts.
GLP-1s also tend to work best when combined with basic lifestyle habits like balanced nutrition and regular physical activity.
That's why choosing a provider that offers proper medical screening and ongoing follow-up support is essential for both safety and long-term success.
When to talk to a professional
Sudden, patchy, or unusual hair loss — or loss with other symptoms — can have causes beyond pattern baldness and is worth discussing with a clinician. A licensed provider can confirm what's going on and recommend a treatment plan that fits you. This guide is general information, not medical advice.