Key points
- Licensed in the UK for hereditary hair loss
- Available without a prescription at pharmacies and online
- Not usually available on the NHS for hair loss
- Give it at least 4–6 months before judging
01
What is minoxidil?
Minoxidil was first developed as a blood pressure tablet. Doctors noticed it caused hair growth, and a topical (applied to the scalp) version was later licensed to treat hereditary hair loss, known medically as androgenetic alopecia.
In the UK, topical minoxidil is regulated by the MHRA as a medicine. You'll find it as a liquid solution or a foam, usually at 5% strength for men and 2% or 5% for women. Regaine is the best-known brand; FOLIGAIN, Careforsons and pharmacy own brands such as Boots and Superdrug also sell it.
02
How does it work?
Minoxidil is thought to widen blood vessels around hair follicles and extend the growth phase of the hair cycle. Over time, thin 'miniaturised' hairs can grow thicker and longer.
It doesn't fix the underlying cause of hereditary hair loss, so the effect lasts only as long as you keep using it. If you stop, any gains usually fade over several months.
03
Can I get minoxidil on the NHS?
Generally no. The NHS treats hereditary hair loss as a cosmetic issue, so minoxidil for this purpose isn't normally prescribed. Most people in the UK buy it themselves from a high street pharmacy, supermarket pharmacy or registered online pharmacy.
Your GP is still the right person to see if you're unsure what's causing your hair loss, because conditions such as thyroid problems, iron deficiency or alopecia areata need a different approach.
04
Choosing a strength and format
Men generally use 5%. Women can use 2% twice a day or a 5% foam once a day, depending on the product licence. Solutions are usually cheaper and easy to target at the scalp; foams dry faster and tend to irritate sensitive skin less because many contain no propylene glycol.
The best product is the one you'll use every day. Compare the cost per month rather than the price per bottle — a three- or four-month pack is often much better value.
05
What to expect
Many people notice extra shedding in the first 2–8 weeks. This is common and usually means older hairs are making way for new growth. Visible improvement typically takes 4 months, and the full effect can take around a year.
Take photos in the same light every month — it's far more reliable than the bathroom mirror. If your hair loss is sudden, patchy, comes with an itchy or sore scalp, or you feel unwell, see your GP or a pharmacist before starting any treatment.
Frequently asked questions
Do I need a prescription for minoxidil in the UK?+
No. Topical minoxidil (solution or foam) is sold without a prescription at pharmacies and online. Oral minoxidil tablets for hair loss do need a prescription.
How much does minoxidil cost in the UK?+
Prices vary a lot between branded and own-brand products. Compare the cost per month and look out for multi-month packs, which are usually cheaper.
Is minoxidil safe?+
It's been used for decades and is generally well tolerated. The most common side effects are scalp itching, dryness or flaking. Read the leaflet and speak to a pharmacist if you have heart problems or other health conditions.
Sources and references
Written by the Minoxidil UK editorial team in line with our editorial policy. Product details should be checked against each product's official leaflet.
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