Hair Loss Treatments That Actually Work

Of all the questions I was asked in twenty-three years behind the chair, "is my hair thinning?" was the one people asked most quietly. Usually at the shampoo bowl, eyes closed, as if it were easier to say without looking at me. The honest answer was often yes. The more useful answer was what to do about it, and that is what this page is for.

I am a stylist, not a doctor. Nothing here is medical advice. What I can give you is a map: which treatments have real evidence behind them, which do not, and how to tell which kind of hair loss you have, because that decides everything else. Start here, then follow the links to the treatment pages.

First, which kind of hair loss is it?

Treatments only work on the problem they were made for. Most hair loss falls into one of four groups, and they look different in the mirror.

Pattern hair loss

The most common kind by far, in men and women. It is hereditary and driven by hormones, and it is gradual. In men it shows as a receding hairline at the temples and thinning at the crown. In women it usually looks like a widening part and less volume on top, with the hairline intact. This is the kind the proven treatments below are for.

Shedding after a shock to the body

Illness, surgery, childbirth, a crash diet, rapid weight loss, or major stress can push a wave of hair into its resting phase at once. About three months later it falls out together, all over the head. It looks alarming and usually recovers on its own. I wrote about it in Why It Started Three Months Ago. It does not need prescription treatment; it needs time and a well-fed body.

Breakage and traction

Hair that snaps along the length is not hair loss at the root; it is damage. Hair lost at the hairline from years of tight ponytails, braids, or badly fitted extensions is called traction alopecia. I fitted extensions for years, and I will say plainly: weight in the wrong place, applied too tight, for too long, does real damage to the hairline. Caught early, it recovers when the tension stops. Left for years, it can become permanent.

Patchy or inflamed loss

Round bald patches, a scalp that is red, scaly, itchy, or painful, or loss that is fast and uneven: these are a dermatologist's problem, not a telehealth one. Some forms scar the follicle permanently if untreated. Do not order anything online for this. Book an appointment.

What actually works for pattern hair loss

The list is shorter than the hair-care aisle suggests. Three treatments have solid evidence, and the best results usually come from combining them.

Finasteride (men)

A daily prescription pill that lowers DHT, the hormone that shrinks follicles in pattern hair loss. In the original two-year trials, most men taking it stopped losing hair, and many regrew some. It is the single most effective treatment for men. It has side effects worth understanding before you start, and it is not for women who are or could become pregnant. Full details: Finasteride: what it does, side effects, who it's for.

Minoxidil (men and women)

Available as a foam or solution you apply to the scalp, sold over the counter, and increasingly prescribed as a low-dose daily tablet. It lengthens the growth phase of the hair cycle. It works for both men and women, and it only keeps working while you use it. Full details: Minoxidil: topical vs. oral.

Low-level laser therapy

FDA-cleared caps and helmets that shine red light on the scalp. The evidence is real but more modest than for the two medications, and it works best alongside them, not instead of them. It suits people who cannot or will not take medication. I explain how to choose one on The Laser Cap.

For women specifically

Women have additional options, including spironolactone and low-dose oral minoxidil, and a few different rules about what is safe. That gets its own page: Women's hair loss treatments that work.

What does not work, or only works if you are deficient

Biotin. Biotin deficiency causes hair loss, but true deficiency is rare. If you are not deficient, extra biotin does nothing for your hair. It can also interfere with some blood tests, including thyroid tests, so tell your doctor if you take it.

Iron, vitamin D, zinc. Low iron in particular is a real and common cause of shedding in women. But supplements only help if you are low, and too much iron is harmful. Get a blood test first.

Rosemary oil. Popular online, based mainly on one small study. It is pleasant and unlikely to hurt, but it is not a substitute for a proven treatment.

"Thickening" shampoos and serums. Some make hair look fuller for a day by coating the strand. That is styling, not treatment. Ketoconazole shampoo has some evidence as a supporting player, and that is about it for the shampoo shelf.

What it costs

Price is one of the reasons people give up, so it is worth knowing the range before you start. Generic finasteride is inexpensive at most pharmacies, often a few dollars a month with a discount card. Over-the-counter minoxidil foam typically costs less than a monthly haircut. Online telehealth subscriptions bundle the consultation with the medication and often cost more than buying generics yourself, but save you an appointment. Laser caps are a one-time purchase of several hundred dollars or more, and in-clinic treatments such as PRP cost the most and repeat.

Because every treatment only works while you keep using it, think in years rather than months. A treatment you can afford and keep up for five years will do more for your hair than an expensive one you abandon in six months.

Timing, and the part nobody likes

Every real treatment is slow. Expect three to six months before you see anything and a full year before you judge it. Minoxidil often causes a temporary shed in the first weeks as old hairs make way for new ones, which frightens people into quitting at exactly the wrong moment. And every treatment works only while you use it: stop, and over the following months you lose what it was holding on to.

The other truth is that treatment is better at keeping hair than growing it back. Starting when you first notice thinning will do more than starting five years later. If you are on the fence, take photos in the same light every three months. The camera is more honest than the mirror.

Where to get treatment

For pattern hair loss, you have three routes. Your own doctor or a dermatologist can diagnose the type of loss and prescribe, which is the best choice if anything about your loss is unusual. Topical minoxidil is available over the counter. And online telehealth programs now prescribe finasteride, oral minoxidil, and combinations after an online consultation, often for less than an office visit. Online care is reasonable for straightforward pattern loss. It is the wrong choice for patchy, inflamed, or sudden loss.

If you go online, ask the same questions you would ask any provider: who is the licensed prescriber, what exactly is in the medication, is it a standard product or a compounded combination, what does it cost every month, and how do you cancel.

A provider I link to

Happy Head was founded in 2021 by dermatologists, and board-certified dermatologists review every case. Its specialty is custom-compounded treatment: topical solutions with minoxidil up to 8% combined with finasteride or dutasteride, an oral capsule combining finasteride or dutasteride with low-dose minoxidil, and a spironolactone-and-minoxidil topical for women. It also sells standard generics on their own at lower prices. It costs more than most online programs, roughly $79 to $99 a month for a custom topical and more for bundles, with free shipping. Two honest notes: the custom combinations are compounded, so each ingredient has evidence but the combined product has not been tested or FDA-approved as a unit, and if you only want generic finasteride or over-the-counter minoxidil, a pharmacy is cheaper. Where Happy Head fits is the person who has tried the basics without enough result and wants a dermatologist to adjust a formula. Prices checked October 2026; confirm on their site.

While you treat it

This is where I can help most. Thinning hair is fragile hair. Be gentle while treatment does its work: loosen tight styles, lower the heat, do not brush aggressively when wet, and use a brush that glides through rather than tearing. A good cut matters too. The right shape makes thinner hair look fuller, and the wrong one, usually too much length weighing it down, makes it look thinner than it is.

Disclosure: this page contains affiliate links. If you sign up with a provider through one of them, I may earn a commission at no extra cost to you. That does not change what I write. How this works.

Peter Louis is a Manhattan stylist and salon owner and the founder of Bombshell Brush. This article is not medical advice. Talk to a doctor or dermatologist about hair loss, especially if it is sudden, patchy, or painful.