Why nothing you’ve tried for thinning hair has worked

The difference between products that coat the strand and treatments that target the follicle

You’ve probably tried a few things. Thickening shampoos. Biotin supplements. Maybe a scalp serum or a volumizing spray that promised “visibly fuller hair in 30 days.”

None of it made a real difference. That’s not because you picked the wrong product. It’s because those products were never built to regrow hair. They work on the strand, coating it, plumping it, making it look slightly thicker until the next wash. They don’t do anything at the follicle, which is where thinning happens.

Over the past few years, dermatologists have shifted toward a different approach: prescription-strength treatments that target hair loss at its source. Minoxidil, finasteride, dutasteride, spironolactone. Ingredients with decades of clinical data behind them. Thanks to telehealth, you can now access these treatments online without a specialist visit. Hers is one of the most widely used platforms for women, with a free assessment that takes about five minutes.

We compared four programs to help you find the right fit.

Best hair regrowth programs

Why your shampoo can’t do what you need it to

There are hundreds of products marketed toward people with thinning hair. Shampoos, serums, supplements, scalp masks. The packaging says “thickening” or “strengthening” or “hair growth.” Some of them do make hair look slightly fuller for a few hours.

But they’re working on the strand, not the follicle. That distinction matters. Thinning happens when follicles shrink over time, a process called miniaturization. As follicles miniaturize, they produce thinner, shorter hairs until they stop producing visible hair altogether. No shampoo can reverse that. It’s not what shampoos do.

Clinical treatments address what’s driving the loss. Minoxidil (the active ingredient in Rogaine and used across all four programs below) extends the growth phase of the hair cycle and increases blood flow to the follicle. Finasteride and dutasteride block DHT, the hormone responsible for follicle shrinkage in men. Spironolactone addresses hormonal thinning in women. Some compound formulas combine multiple actives into a single application.

How to tell what category you’ve been using

Check the active ingredients on whatever you’ve tried. If the label lists biotin, keratin, caffeine, saw palmetto, or plant extracts, that’s a cosmetic product. It may improve the appearance of existing hair, but it can’t regrow what’s been lost.

If it contains minoxidil (2% or 5%), finasteride, dutasteride, or spironolactone, that’s a clinical treatment targeting the follicle. Minoxidil is the only FDA-approved topical ingredient for pattern hair loss. The others are prescribed by dermatologists for hormonal causes of thinning.

Most people have never used the clinical category. Not because they wouldn’t benefit from it, but because prescription treatments historically required a specialist appointment, a long wait, and costs insurance wouldn’t cover. Telehealth changed that. Several platforms now handle the process online: evaluation, prescription, delivery. Starting under $1 a day with Hims for men, or $15 a month with Hers for women.

Four programs we’d recommend

We compared what’s available for people looking at clinical hair regrowth treatments online. These four stood out. Men and women need different formulations, so we picked a top program for each, plus a custom-compound option and one that doesn’t require a prescription.

What to expect with timeline

Hair regrowth takes patience. Most people start noticing less shedding within the first 4-6 weeks. New growth typically becomes visible around month 3, with the most noticeable results between months 6 and 12.

Hers and Hims both report visible improvement within 3-6 months of consistent use. Happy Head notes their custom compound formulas show results in a similar timeframe. With Keranique‘s OTC minoxidil, the timeline is comparable: the AAD recommends using minoxidil consistently for at least 4-6 months before evaluating results.

One thing to know: these treatments work best when started early. Active follicles that have miniaturized can often be revived. Follicles that have been dormant for years are harder to bring back. If you’ve been noticing gradual thinning, sooner is better than later.