Key points
- Both Regaine and Boots minoxidil contain the same active ingredient and come in 2% and 5% strengths.
- Consider foam if you have a sensitive scalp; solution may be more affordable.
- Always compare the cost per month, as pack sizes and dosages vary.
- Consult product leaflets for correct usage and potential side effects before starting treatment.
01
Active Ingredient and Strength
Both Regaine and Boots own-brand minoxidil utilise minoxidil as their primary active ingredient. Minoxidil is a vasodilating drug, believed to work by widening blood vessels and stimulating hair follicles, which can encourage hair growth and slow hair loss. It is the only over-the-counter topical treatment for pattern hair loss approved by the Medicines and Healthcare products Regulatory Agency (MHRA) in the UK.
Both brands typically offer minoxidil in two strengths: 2% and 5%. The 5% strength is generally considered more effective, particularly for men, but may also come with a higher chance of side effects. For women, the 2% solution is often recommended, though 5% foam may also be suitable, always check the specific product leaflet for guidance and suitability for women.
02
Formats and Inactive Ingredients
Minoxidil is widely available in two main formats: a topical solution and a foam. Regaine offers both foam and solution, as does Boots' own-brand range. The solution is typically applied with a dropper, while the foam is dispensed directly onto the scalp. The choice between formats often comes down to personal preference for ease of application and how it feels on the scalp and hair.
Inactive ingredients can differ between products. Some solutions, for example, contain propylene glycol and alcohol, which can sometimes cause irritation, dryness, or an itchy scalp in sensitive individuals. The foam formulations generally contain less or no propylene glycol, which may make them a preferred option for those who experience sensitivity. Always review the full ingredient list on the product packaging or the electronic medicines compendium (emc) leaflet.
03
Availability in the UK
Minoxidil is classified as a 'Pharmacy medicine' (P medicine) in the UK, meaning it can be sold over the counter at GPhC-registered pharmacies, but only under the supervision of a pharmacist. This applies to both Regaine and Boots' own-brand versions. You can find these products in physical Boots stores across the UK, as well as on their online pharmacy.
Other independent pharmacies and online retailers also stock minoxidil-based products. Brands like FOLIGAIN (available via foligain.co.uk) also offer minoxidil-containing products as an alternative. When purchasing online, ensure the retailer is a legitimate GPhC-registered pharmacy or a reputable vendor to guarantee product authenticity and safety.
04
Comparing Cost Per Month
While direct prices aren't given here, it's prudent to compare the cost per month rather than just the upfront price of a single pack. Pack sizes can vary significantly, with some offering a one-month supply and others a three or six-month supply. Remember to factor in the recommended dosage – for example, applying twice daily versus once daily for some 5% foams.
Boots' own-brand minoxidil is often positioned as a more budget-friendly alternative to Regaine, though this isn't always the case depending on promotions or bulk purchase options. Always check the current offerings from various retailers, including online pharmacies and specialist men's health services, to find the most cost-effective option for your needs.
05
Who Each May Suit
Regaine, being the original brand, is often chosen by those who prefer a well-established name. Its formulations are widely recognised, and many users find success with it. It may appeal to individuals who are less concerned about price and prioritise brand familiarity and extensive research behind the product. Both Regaine and Boots products are suitable for people experiencing hereditary hair loss.
Boots own-brand minoxidil is often an excellent choice for those looking for a more economical option without compromising on the active ingredient. Since the minoxidil itself is the same, efficacy should be comparable between the branded and own-brand versions of the same strength and format. It's a good option for people who want to try minoxidil therapy without the higher price tag associated with a premium brand.
06
Important Considerations
Before starting any minoxidil treatment, it's advisable to speak to a pharmacist or your GP, especially if you have underlying health conditions or are taking other medications. Minoxidil is not usually prescribed on the NHS for hair loss, meaning you'll need to purchase it privately. Side effects, though generally mild, can occur and should be reported to the MHRA via the Yellow Card scheme if serious.
If you experience severe irritation, chest pain, dizziness, or other concerning symptoms, stop using the product immediately and seek medical advice, potentially by calling NHS 111. For persistent or worsening hair loss, a GP referral to a dermatology specialist might be beneficial to rule out other causes and discuss a comprehensive treatment plan.
Comparison table
| Criterion | Option A | Option B |
|---|---|---|
| Strength | Check the current product | Check the current product |
| Format | Foam or solution depending on range | Foam or solution depending on range |
| Inactive ingredients | See the ingredients list | See the ingredients list |
| Pack size | Check the current product | Check the current product |
| Monthly cost | Work out from volume used | Work out from volume used |
Frequently asked questions
Is there a difference in efficacy between Regaine and Boots minoxidil?+
No, because both products contain the same active ingredient, minoxidil, at the same strengths (2% and 5%), their efficacy should be comparable. Any perceived differences might relate to inactive ingredients, formulation feel, or individual response rather than the core active component.
Can women use 5% minoxidil?+
While 2% minoxidil solution is commonly recommended for women, 5% minoxidil foam is also approved for female use in the UK, as per product leaflets. However, women should consult the specific product instructions and consider discussing it with a pharmacist or doctor due to a higher potential for side effects like facial hair growth.
What should I do if I experience side effects?+
Minor side effects like scalp irritation are common. If you experience severe irritation, a rash, or more serious symptoms such as dizziness, chest pain, or swelling, stop using the product immediately and seek medical attention, for example, by calling NHS 111. You can also report side effects to the MHRA via their Yellow Card scheme.
Why is minoxidil not prescribed on the NHS for hair loss?+
Minoxidil is generally considered a cosmetic treatment for pattern hair loss rather than a treatment for a medical condition impacting overall health. Therefore, it is not typically funded by the NHS and must be purchased privately. If a dermatologist recommends it, it would still be a private prescription.
Where can I find detailed product information for Regaine or Boots minoxidil?+
You can find comprehensive information, including full ingredient lists, dosage instructions, and potential side effects, on the product packaging, the accompanying leaflet inside the box, or by searching the electronic medicines compendium (emc) website using the product name.
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.
A question about this guide?
Ask in a few words and get a clear answer, plus the Minoxidil UK guides to read next.