Minoxidil for hair loss

What minoxidil is

Minoxidil is a medicine. For hair loss it comes in three forms: a liquid solution and a foam, both applied to the scalp, and a tablet taken by mouth. In the United States the men's 5% solution and foam are sold over the counter, and in the United Kingdom the men's foam is on general sale. The tablets are authorised in both countries for high blood pressure, so taking them for hair loss is an off-label use that needs a prescriber. ^{[1, 2, 3, 4, 5]}

This page is about adult men with male pattern hair loss: gradual thinning at the hairline or the crown. If hair is falling out suddenly, in patches, or the scalp is sore or inflamed, the first step is an assessment, not a product. Check that the guide fits your situation before comparing anything.

We do not explain here how minoxidil acts on the hair follicle. The sources behind this page are clinical trials and product labels. They tell you what happened to hair counts, how people used the product and what side effects were recorded, and those are the things a decision depends on.

Where it sits in our comparison

Minoxidil is one of the two options to weigh first for male pattern hair loss, tied with finasteride. The position rests on the two scalp forms. Both have trials in men against a product without minoxidil, both have usable product labels, and the application is manageable. Sharing the top tier does not mean the two medicines have equal effects, and the tablet form keeps its own, more cautious assessment. ^{[6, 3, 7]} The minoxidil and finasteride comparison puts the two side by side.

How minoxidil rates

Position 1 of 6 in our ranking. Same tier as finasteride: our review does not pick a winner between them. The same eight criteria for every ingredient.

Core option

EffectivenessStrength

Benefit shown against an inactive vehicleBoth scalp forms did better than the same product without minoxidil in trials of men. Those trials do not show which form is better, or how minoxidil ranks against finasteride or dutasteride.

Evidence strengthStrength

Broader clinical supportA broader set of trials and product labels supports the scalp forms. This is not a formal certainty grade, and some older trials could only be checked in their published summaries.

Risks and tolerabilityTrade-off

Scalp irritation; labels also carry systemic warningsOn the scalp, irritation and itching are the usual problems, and the labels also list body-wide warning symptoms. Tablets bring more unwanted hair growth, plus swelling and heart-related cautions.

TimeDepends

Review point set by each product's labelTrials measured at 16 weeks for foam and 48 weeks for solution. Labels set different review points: 16 weeks, 4 months or one year, depending on the product.

CostDepends

Depends on country and formIn our price check it was the cheaper of the two core options in the US examples and the dearer one in the UK examples. That is not a global ranking.

RoutineTrade-off

Twice-daily scalp applicationTwo applications a day with a product-specific amount. Foam and solution feel different in the hair, which can decide whether you keep it up.

MaintenanceTrade-off

Benefit lasts only with continued useYou have to keep using it to keep the regrowth. One label reports the gain fading within three to four months of stopping.

AccessStrength

Labelled products available (US and UK checked)Men's scalp products with clear labels are sold in the US and UK. Tablets are not approved for hair loss in either country.

An order of consideration for adult male pattern hair loss, not a score. Strength, Depends and Trade-off describe each line on its own; they do not add up to a number.

The same eight criteria are used for every ingredient in the comparison. How we apply them is on the methodology page.

Solution, foam or tablets

5% solution

Core option

A measured liquid applied with a dropper or a pump. A spray is often this same solution with a different applicator, not a separate treatment.

Evidence in men

393 men over 48 weeks: 5% did better than 2% and than the liquid without minoxidil.

Reference use

1 mL twice a day on the UK and US men's labels.

Keep in mind

The UK product contains propylene glycol, which can irritate some scalps.

5% foam

Core option

The same medicine in a foam. An alternative to the solution, not something to add on top of it.

Evidence in men

352 men over 16 weeks: more regrowth than the foam without minoxidil.

Reference use

Half a capful twice a day on the UK and US men's labels.

Keep in mind

The UK foam has no propylene glycol, but other ingredients can still irritate.

Tablets

Conditional

A low dose taken by mouth. It reaches the whole body, so the decision belongs with a prescriber.

Evidence in men

90 men over 24 weeks: 5 mg a day did not beat the 5% solution on the main measure.

Reference use

No hair-loss dose on any label we checked. Trials used 2.5 mg or 5 mg a day.

Keep in mind

More unwanted hair growth and headaches than the solution in that trial.

Foam or solution? The trials we reviewed do not show which one regrows more hair in men. Each was tested against its own inactive version, in different studies of different lengths, so the numbers cannot be lined up to pick a winner. One 2026 report did compare the two directly, in about 100 men over 12 weeks, but its numbers are inconsistent and it was not designed to show that the two are equal, so we do not rely on it. The other direct comparisons were done in women, with 5% foam once a day against 2% solution twice a day, and they do not settle the question for men either. Choose on tolerability, how it fits your hair and routine, and price. ^{[6, 3, 9, 10, 11]} The foam and liquid comparison goes through those trials and the practical differences.

What the trials measured

On the scalp, against a product with no minoxidil

The clearest numbers come from the foam. The UK product information reports a trial of 352 men aged 18 to 49: 180 used 5% minoxidil foam and 172 used the same foam without minoxidil. After 16 weeks the men on minoxidil had gained about 21 hairs per square centimetre in the measured area, against about 4 in the comparison group. ^{[3, 12]}

• 5% minoxidil foam180 men

  +21.0hairs per cm²

• Foam without minoxidil172 men

  +4.3hairs per cm²

Change in non-vellus hair count in a marked target area, as reported in the UK product information. A target area is a small patch of scalp chosen for the study, not the whole head. ^[3]

For the solution, a trial of 393 men ran for 48 weeks and found that 5% did better than both 2% and the liquid without minoxidil, with more scalp irritation at the higher strength. We could verify that result in the published summary but not the exact size of the gain, so we do not print a number for it. ^[6]

Two things follow from this. Minoxidil on the scalp does more than nothing, in trials designed to check exactly that. And it improves density in the treated area without promising that hair comes back completely.

Tablets compared with the solution

One trial compared the two directly. Ninety men were randomly given either a 5 mg capsule of minoxidil by mouth once a day or 1 mL of 5% solution twice a day, each with a dummy version of the other so nobody knew which they were on. Sixty-eight finished the 24 weeks. On the main measure, the density of thicker "terminal" hairs, minoxidil by mouth did not prove better than the solution, either at the front or at the crown. Photographs of the crown favoured the oral group, but that was a secondary result. ^[7] What labels and trials say about the front of the scalp is on the page about minoxidil and a receding hairline.

A second trial in 100 men compared two doses by mouth, 2.5 mg and 5 mg a day, for 24 weeks. The higher dose did not show an advantage. We know this from the trial's thesis and supplement; the journal article was not available to us. ^[13] Both trials are covered at more length on the oral minoxidil page.

5 mg by mouth vs 5% solution

Thicker terminal hairs, front of the scalp. Above zero means more hair in the oral group.

+3.1 (−18.2 to +21.5)

5 mg by mouth vs 5% solution

Thicker terminal hairs, crown. Above zero means more hair in the oral group.

+23.4 (−0.3 to +43)

Tablet 5 mg vs 2.5 mg

All hairs except the finest. The difference between the two doses; the report does not say which dose it favours.

+0.9 (−2.6 to +4.5)

−200 · no difference+20+40

Difference in hairs per cm², with its 95% confidence interval

The dot is the measured difference and the bar is the range the true difference plausibly sits in. When the bar crosses zero, the trial did not show a difference. That is not the same as proving the two options are equal. ^{[7, 13]}

What the evidence does not show

How to use it: what the labels say

Product labels are the reference for how much to use and how often. They are specific to the product and the country, which is why the four below do not agree on everything. We checked these men's labels on 29 September 2026. ^{[8, 3, 1, 2]} For a step-by-step version, see how to use minoxidil.

Four men's labels, side by side

US and UK products, checked on 29 September 2026.

On the label	UKRegaine for Men Extra Strength5% solution	UKRegaine for Men Extra Strength5% foam	USMen's Rogaine Extra Strength5% solution	USMinoxidil 5% for men5% foam
For	Men aged 18 to 65	Men aged 18 to 49	Men 18 and over, top of the scalp	Men 18 and over, top of the scalp
Amount	1 mL over all thinning areas	1 g, about half a capful	1 mL	Half a capful
How often	Twice a day, 2 mL a day at most	Twice a day, 2 g a day at most	Twice a day	Twice a day
First signs	After about 2 months	After about 8 weeks	After about 2 months; some men need at least 4	After about 2 months; some men need at least 4
No change?	Stop after one year	Stop at 16 weeks	Stop and see a doctor at 4 months	Stop and see a doctor at 4 months

Each column is one product's own label. Amounts and review points do not transfer from one product to another. The two US labels are for the top of the scalp and are not intended for a receding hairline.

1. 1

   Start dry

   Hair and scalp should be dry before you apply.

2. 2

   Measure

   Use the product's own measure: 1 mL of solution or half a capful of foam.

3. 3

   Spread it

   That one amount goes over all the thinning areas, on healthy skin.

4. 4

   Wash your hands

   Then repeat later in the day. The labels say twice a day.

Tablets. None of the labels we checked gives a dose for hair loss. The trials above used 2.5 mg or 5 mg once a day, which describes what was tested and not where a person should start. An international group of 43 hair specialists from 12 countries published a consensus in 2025 on how to assess patients, which precautions to take and what to monitor. It did not agree on a single way of stepping the dose up, and it is expert opinion, not a measure of how well the tablets work. ^{[4, 5, 14]}

How long it takes

Think in months. The labels expect the first signs after about two months, and each sets its own point at which to stop and get advice if nothing has changed: 16 weeks for the UK foam, 4 months for the US products, one year for the UK solution. Trials measured results at 16, 24 and 48 weeks. ^{[8, 3, 1, 2, 7, 6]}

First signs possible Review point on the label Measured in a trial Possible early shedding

UK foam

Men 18 to 49

weeks 2 to 68 wk16 wk

UK solution

Men 18 to 65

2 mo1 yr

US solution and foam

Men 18 and over

2 mo4 mo

Trials

When hair was counted

16 wk24 wk48 wk

Start3 months6 months9 months1 year

A review point is the label's instruction to stop and get advice if there has been no improvement. A trial time point is when researchers measured, not a promise of when you will see a change. ^{[8, 3, 1, 2]}

Shedding in the first weeks

The UK foam label warns that hair shedding can temporarily increase between the second and sixth week, and that it usually settles within a couple of weeks. If it carries on for more than two weeks, the label says to stop and get advice. In the trial that compared minoxidil by mouth with the solution, temporary shedding in the first two months was recorded in 4 of 45 men in the oral group and 7 of 45 on the solution. ^{[3, 7]}

Side effects and safety

On the scalp

The most useful counts come from the solution group of the trial that compared minoxidil by mouth with the solution, 45 men over 24 weeks: eczema in 7, unwanted hair growth elsewhere in 11, headache in 1. Three stopped because of side effects. These are the numbers from one small trial, not rates that apply to everyone. ^[7]

Irritation can come from the minoxidil or from what it is dissolved in. The alcohol and propylene glycol in a solution can limit how well a scalp tolerates it. The UK foam contains no propylene glycol, though its other ingredients can still irritate.

Applied to the scalp does not mean none of it reaches the rest of the body. The US labels tell you to stop and ask a doctor if you get chest pain, a rapid heartbeat, faintness or dizziness, sudden unexplained weight gain, or swollen hands or feet. ^{[1, 2]} The page on minoxidil side effects sets out what each label says to do when a symptom appears.

By mouth

Taken as a tablet, minoxidil acts on the whole body. In the head-to-head trial the differences showed up mostly as hair growing where it was not wanted, and headaches. Blood pressure and heart rate did not differ significantly between the groups, in men who had been selected for having no heart or kidney disease. ^[7]

5 mg by mouth once a day 5% solution twice a day

• Unwanted hair growth

  22 of 45

  11 of 45

• Headache

  6 of 45

  1 of 45

• Scalp eczema

  1 of 45

  7 of 45

• Swollen legs

  1 of 45

  0 of 45

• Stopped because of side effects

  1 of 45

  3 of 45

One trial of 90 men. Small numbers describe what happened in this group and cannot rule out rare events. ^[7]

A larger picture comes from clinic records of 1,404 people taking low-dose tablets for hair loss, followed for about eight months on average. Unwanted hair growth was the most common report (15.1%), followed by lightheadedness (1.7%), fluid retention in the legs (1.3%), a fast heartbeat (0.9%), headache (0.4%) and swelling around the eyes (0.3%). No life-threatening events were seen. Two cautions apply: there was no comparison group, and the percentages were calculated on 2,469 dose records, not on the 1,404 people, so they are not anyone's personal odds. ^[15]

Serious events are the part nobody can put a number on. The US tablet label, written for blood-pressure treatment, warns of fluid around the heart and worsening angina. A published case describes fluid around the heart and lungs in a 40-year-old woman three weeks after starting 0.25 mg a day alongside several other medicines; it cleared after stopping and hospital treatment. One case shows that something can happen, not how often. How frequently rare serious events occur at hair-loss doses is not known from these sources. ^{[4, 16]}

If you stop

The regrowth depends on continued use. All the scalp labels say that treatment has to carry on to keep the benefit. The UK solution label adds that the gain has been reported to disappear within three to four months of stopping, as an observation and not as a fixed deadline for each person. ^{[8, 3, 1, 2]}

For tablets, we found no trial that stopped treatment and measured what happened next, so the timing of any loss is not known.

Combining minoxidil with other options

Combining is optional. Each pairing below is a separate question with its own evidence. ^{[17, 18, 19, 20, 1, 8, 3, 7, 21, 22]}

• Minoxidil + oral finasteride

  Direct trial evidence, with limits

  A trial of 450 men, 428 of them assessed at 12 months, favoured using oral finasteride together with minoxidil on the scalp. Only the published summary was available to us, and it does not prove the two multiply each other's effect. Finasteride brings its own risks and needs a prescription.

  Minoxidil and finasteride together

• Minoxidil + microneedling

  Optional, done by a professional

  Three small trials in men added microneedling to 5% minoxidil used twice a day and recorded more regrowth than minoxidil alone, in 100, 68 and 36 men over 12 weeks. All three have reporting problems, and between them they used two needle depths and three schedules. This is not a recipe for a roller at home, and the labels do not cover applying minoxidil to broken skin.

  Microneedling with minoxidil

• Minoxidil + the other scalp form

  Alternatives, not a pair

  Solution and foam are two ways of applying the same medicine. Pick one and follow its label. Quantities and frequency do not carry over from one product to the other.

  Foam and liquid compared

• Minoxidil + minoxidil tablets on top of the scalp product

  Not established

  The trial that compared minoxidil by mouth with the solution tested them as alternatives. Whether using both adds anything has not been shown in the studies we reviewed, and no overlap or switching schedule is established.

  Minoxidil tablets

• Minoxidil + saw palmetto, rosemary or pumpkin seed oil

  Not established

  These were studied on their own, as specific preparations. Nothing we reviewed tests any of them on its own added to minoxidil. One formula containing saw palmetto and pumpkin seed was studied on top of mixed treatments, and its result belongs to the whole formula. One rosemary lotion was compared with 2% minoxidil, not with the 5% products on this page.

  Full rosemary profile

For the bigger picture of what goes with what, see which options can be combined and which are alternatives.

What it costs

These are single prices we recorded on 29 September 2026, one offer per product, worked out for 30 days at the labelled or studied amount. They are examples, not national averages, and we do not convert between currencies.

United States · US dollars

• 5% solutionStore-brand, 1 mL twice a day

  $7.31

• 5% foamStore-brand, assuming one can a month

  $9.71

United Kingdom · pounds

• 5% solutionOnline pharmacy, 1 mL twice a day

  £16.25

• 5% foamRegaine for Men, 1 g twice a day

  £19.17

• Tablets, 2.5 mg a dayStudy dose, consultation required

  £18.75

• Tablets, 5 mg a dayStudy dose, consultation required

  £37.50

Medicine only. Shipping, taxes, prescription and consultation fees are not included: the UK solution offer added a £4 prescription fee and £2.90 delivery per order, and the tablets require a consultation, whose fee we did not verify.

Over a year these come to roughly $89 to $118 in the US examples and £198 to £233 for the scalp products in the UK examples. In the same price check, minoxidil on the scalp was cheaper than the finasteride subscription we looked at in the US, while generic finasteride tablets were cheaper in the UK. Price says nothing about which works better.

Minoxidil for women

This page and our hair guide are written for men. Women's products carry their own instructions, even at the same strength. ^{[23, 24]}

Trials in women compared 5% foam once a day with 2% solution twice a day. A study of 113 women reported the foam to be no worse on hair count, with fewer local reactions. A larger one of 322 women found almost identical gains, about 24 hairs per square centimetre in both groups, but its statistics fell just short of proving the foam "no worse". A small trial of 52 women compared a 1 mg tablet with 5% solution once a day and found no clear difference. None of this can be carried over to men, and the men's instructions should not be carried over to women. ^{[10, 11, 25]}

Keeping track

For a practical photo setup and record of use, see how to track hair changes. If you are comparing botanical alternatives, read rosemary versus minoxidil.

Day-to-day changes are too small to see in the mirror. Three habits make the review point on your label meaningful. They are organising suggestions of ours, not something tested in a trial:

When you reach the review point on your product's label, you will have something to compare instead of an impression. If you are unsure what the photos show, that is a good moment to ask a pharmacist or doctor.