Which hair loss treatment is right for me?

Noticed more hair in the plughole, or a hairline that's quietly creeping backwards? You're far from alone. Male pattern baldness affects 30 to 50% of men by the age of 50. But several hair loss treatments can slow it down and, for many people, help hair grow back.¹

This guide covers the options available in the UK in 2026, from finasteride and Regaine to newer approaches like oral minoxidil and topical finasteride sprays. We'll also look at what the evidence says about shampoos, rosemary oil and supplements, so you can work out what's actually worth your time and money.

The sooner you start, the more active hair follicles you have to work with. Waiting rarely makes treatment easier.

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What causes most hair loss?

For most men, and many women, hair loss is pattern hair loss (androgenetic alopecia). It usually runs in the family and doesn't grow back on its own.²

It's driven by a hormone called dihydrotestosterone (DHT), which your body makes from testosterone. If your follicles are genetically sensitive to DHT, they gradually shrink. Each new hair grows back thinner and shorter, until some follicles stop producing hair at all.¹ You can read more about this in our guide to the role of testosterone in hair loss.

Once a follicle has fully shrunk, it's much harder to bring back. That's why starting treatment early tends to give better results.¹

A quick check with a GP can rule out other causes before you spend money on treatment.

Not all hair loss is pattern hair loss, though. Stress, illness and weight loss can all trigger shedding, and a GP can often tell what's going on just by looking at your hair.² Nutrient gaps can play a part too, which we cover in our guide to vitamin deficiencies that cause hair loss.

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Which hair loss treatments are clinically proven?

Two medicines have the strongest evidence for pattern hair loss: finasteride and minoxidil. They're the main treatments for male pattern baldness, but they usually aren't available on the NHS, so you'll need to pay for them privately.²

Finasteride (and Propecia)

Finasteride is a daily 1 mg tablet for men. It blocks the enzyme that turns testosterone into DHT, lowering DHT levels in your scalp and bloodstream.³ Propecia is the original branded version.

It has a solid track record. In five-year trials, 48% of men taking finasteride had visible improvement and a further 42% kept the hair they had. In the placebo group, hair loss kept getting worse.³

You'll usually need three to six months of daily use before your hair loss starts to stabilise. If you stop, the benefits begin to fade within six months and are typically gone within 9 to 12 months.³

Finasteride is a prescription-only medicine, so a prescriber needs to check it's right for you first. Women must not take it, and women who are or could become pregnant should not handle crushed or broken tablets.³

Minoxidil (Regaine)

Minoxidil is applied straight to your scalp as a foam or liquid. It's thought to work by improving blood flow to hair follicles and nudging them into their growth phase.¹ It doesn't affect hormones, so it's suitable for men and women, and you can buy it without a prescription.

For men, Regaine Foam for Men and Regaine Solution for Men both contain 5% minoxidil and are used twice a day. You may need at least 8 weeks before you notice regrowth, and it's worth giving it 16 weeks before judging whether it's working.⁴

For women, Regaine Foam for Women contains 5% minoxidil and is used once a day. It can take 12 to 24 weeks to see results.⁵ Regaine Solution for Women is a 2% liquid alternative.

Some people notice extra shedding in the first few weeks. Annoying, but it's usually a sign the treatment is kicking in, as old hairs make way for new ones.¹

Both treatments only work while you keep using them, so think of them as a long-term commitment rather than a quick fix.

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What are the side effects of finasteride and minoxidil?

Most people use both treatments without any problems. Still, it's worth knowing what to look out for.

With finasteride, the following side effects are uncommon, affecting up to 1 in 100 men:³

• Decreased sex drive - uncommon
• Erectile dysfunction - uncommon
• Ejaculation problems - uncommon, including a lower volume of semen
• Depression - uncommon

Anxiety, suicidal thoughts, breast tenderness or enlargement and testicular pain have also been reported, but how often they happen isn't known. Tell your doctor promptly about any breast lumps, pain or nipple discharge.³

In 2026, the MHRA strengthened its warnings again. It now says finasteride is significantly associated with low mood, depression, suicidal thoughts and sexual problems, and every pack includes a patient alert card explaining what to do if they happen. Sexual side effects can occasionally continue after stopping treatment.⁶ If you develop low mood or suicidal thoughts, stop taking finasteride and seek medical advice straightaway.⁶

Any mood or sexual changes should be flagged as soon as possible to your prescriber or GP.

Minoxidil's side effects are mostly skin-deep: an itchy or flaky scalp, redness, and unwanted hair growth on the face or hands if the product spreads beyond your scalp.¹ Washing your hands after each application helps. Stop using it and speak to a doctor if you get chest pain, a racing heartbeat, dizziness or faintness, or sudden swelling of your hands or feet.⁴

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Can you use finasteride and minoxidil together?

Yes, and plenty of men do. The two work in different ways: finasteride lowers DHT, while minoxidil acts directly on the follicle.

In one comparison study, men using finasteride plus minoxidil saw better regrowth than men taking finasteride alone, with no increase in side effects.¹

Each treatment tackles hair loss from a different angle, which is why they're often paired rather than chosen between.

That said, Propecia's official product information notes there's no formal data on using it alongside topical minoxidil, so it's a decision to make with your prescriber.³ If you'd like to use both, our hair regrowth kit combines them, subject to medical assessement.

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What about oral minoxidil and topical finasteride?

Both have grown fast in popularity over the last couple of years, and you've probably seen them advertised. Here's where they stand.

Oral minoxidil

Oral minoxidil is low-dose minoxidil taken as a tablet. It was first developed as a blood pressure medicine and isn't licensed for hair loss, so prescribers use it off-label.¹

The early evidence looks promising. In a study of more than 1,400 people, the most common side effect was unwanted hair growth elsewhere on the body (around 15%). Fewer than 2% had lightheadedness, fluid retention or a faster heartbeat.¹

Because it acts on your whole body, it needs a proper assessment by a prescriber first, especially if you have a heart condition or low blood pressure.

Never use blood pressure tablets, or someone else's prescription, to treat your own hair loss.

Topical finasteride

Topical finasteride is a spray or solution you apply to your scalp. In a phase III trial, it increased hair counts significantly more than a placebo after 24 weeks, with results similar to finasteride tablets. It also lowered DHT in the blood less than tablets did.⁷

A licensed finasteride spray is approved in several European countries, but in the UK, most topical finasteride is prescribed privately as an unlicensed medicine. It's still finasteride, so the same safety warnings and patient alert card advice apply.

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Do shampoos like Alpecin and Nizoral help with hair loss?

Caffeine and medicated shampoos are popular add-ons. They're best seen as supporting acts rather than the main treatment.

Alpecin

Alpecin Caffeine Shampoo delivers caffeine to your scalp. Lab research suggests caffeine may counteract some of DHT's effects on hair follicles.⁸ Alpecin is a cosmetic product rather than a licensed medicine.

It also comes as Alpecin Double Effect, which adds anti-dandruff ingredients, and Alpecin Liquid, a leave-in scalp tonic that doesn't need rinsing out.

Nizoral

Nizoral Shampoo contains ketoconazole, an antifungal that also calms inflammation. It's licensed to treat and prevent dandruff.⁹

There's some evidence it adds a modest benefit when used alongside finasteride, and it can help if a flaky, irritated scalp is part of the picture.¹

Shampoos can play a useful supporting role, but on their own they're unlikely to make a big difference to pattern hair loss.

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Do natural hair loss treatments work?

Natural remedies are everywhere online. Here's what the research actually shows.

Rosemary oil

Rosemary oil for hair growth has had its big moment on social media. There's one small trial behind the hype: 100 men with pattern hair loss used either rosemary oil or 2% minoxidil for six months, and both groups saw a similar increase in hair count.¹⁰

Interesting, but it's a single small study. It used a lower strength of minoxidil than most men are recommended, and it hasn't been repeated in larger trials. For now, rosemary oil isn't a substitute for a licensed treatment.

Natural doesn't automatically mean effective. If you want to try rosemary oil, use it alongside a proven treatment, not instead of one.

Low-level laser therapy (LLLT)

Laser caps and combs use low-level light to try to stimulate hair follicles. Some devices show promise, but large, placebo-controlled trials are still lacking.¹

Vitamins and supplements

Supplements won't treat pattern hair loss. Biotin does contribute to the maintenance of normal hair, though, so OneVit Biotin can be a sensible addition if your diet falls short.

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Which hair loss treatment is best for you?

There's no single best hair loss treatment. The right choice depends on your sex, how far your hair loss has progressed and how you feel about taking a daily tablet. As a rough guide:

• Men with early to moderate hair loss - finasteride, minoxidil or both are usually the first options, once a prescriber has checked finasteride is suitable.
• Men who'd rather avoid tablets - topical minoxidil on its own is a good starting point, and topical finasteride is worth discussing with a prescriber.
• Women with thinning hair - minoxidil is the main licensed option. Finasteride is not suitable for women.²
• Anyone with a flaky or irritated scalp - Nizoral can be a useful addition alongside a main treatment.

Whichever route you take, most treatments need three to six months of consistent use before you can fairly judge them, and results only last while you keep going.³

Small changes are easy to miss in the mirror. Taking photos of your hairline and crown before you start makes progress much easier to spot.

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When should you see a GP about hair loss?

Gradual thinning usually isn't a sign of anything serious. But see a GP if:²

• You have sudden hair loss
• You develop bald patches
• You're losing hair in clumps
• Your scalp is itchy or burning as well
• You're worried about your hair loss or it's affecting your wellbeing

If your hair loss is causing you distress, your GP may also be able to help you access counselling.²

Patchy or sudden hair loss can have a different cause from pattern baldness, so get it checked rather than reaching straight for a treatment.

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References

1. Asfour L, Cranwell W, Sinclair R. Male Androgenetic Alopecia. Endotext, NCBI Bookshelf; 2023. ncbi.nlm.nih.gov
2. NHS. Hair loss. NHS website; 2026. nhs.uk
3. Organon Pharma (UK) Limited. Propecia 1 mg Film-Coated Tablets: Summary of Product Characteristics. Electronic Medicines Compendium; 2026. medicines.org.uk/emc
4. Kenvue. Regaine for Men Extra Strength Scalp Foam 5% w/w Cutaneous Foam: Patient Information Leaflet. Electronic Medicines Compendium; 2025. medicines.org.uk/emc
5. Kenvue. Regaine for Women Once a Day Scalp Foam 5% w/w Cutaneous Foam: Summary of Product Characteristics. Electronic Medicines Compendium; 2026. medicines.org.uk/emc
6. Medicines and Healthcare products Regulatory Agency. MHRA strengthens safety warnings for finasteride and dutasteride. GOV.UK; 2026. gov.uk
7. Piraccini BM, Blume-Peytavi U, Scarci F, et al. Efficacy and safety of topical finasteride spray solution for male androgenetic alopecia: a phase III, randomized, controlled clinical trial. Journal of the European Academy of Dermatology and Venereology. 2022;36(2):286-294. doi:10.1111/jdv.17738
8. Bansal M, Manchanda K, Pandey SS. Role of caffeine in the management of androgenetic alopecia. International Journal of Trichology. 2012;4(3):185-186. doi:10.4103/0974-7753.100096
9. Thornton & Ross Ltd. Nizoral Anti-Dandruff Treatment 2% w/w Shampoo: Summary of Product Characteristics. Electronic Medicines Compendium; 2026. medicines.org.uk/emc
10. Panahi Y, Taghizadeh M, Marzony ET, et al. Rosemary oil vs minoxidil 2% for the treatment of androgenetic alopecia: a randomized comparative trial. Skinmed. 2015;13(1):15-21. pubmed.ncbi.nlm.nih.gov

This article is intended for informational purposes only and does not replace professional medical advice. Always read the patient information leaflet supplied with your medication and speak to a healthcare professional if you have specific concerns.