Minoxidil is a topical treatment for hair loss that has been available in the UK since the 1980s. Originally developed as an oral medication for high blood pressure, its hair-growth properties were discovered as a beneficial side effect. The 5% concentration is the standard strength for men and is available without a prescription from UK pharmacies.
How Does Minoxidil Work?
Minoxidil is a vasodilator — it widens blood vessels in the scalp, increasing blood flow and nutrient delivery to hair follicles. It also prolongs the anagen (growth) phase of the hair cycle and may reactivate dormant follicles. Unlike finasteride, minoxidil does not affect DHT levels.
How to Apply Minoxidil Correctly
Proper application technique is important for effectiveness:
- Ensure your scalp is dry before application — applying to wet hair dilutes the solution and reduces absorption
- Apply 1 ml of solution (or half a capful of foam) directly to the affected area using the dropper or foam applicator
- Gently spread the solution across the thinning area with your fingertips without vigorous massage
- Wash your hands thoroughly after application to avoid unwanted hair growth elsewhere
- Allow the solution to dry completely before going to bed — approximately 2 to 4 hours for liquid and 15 minutes for foam
- Apply twice daily, morning and evening, approximately 12 hours apart
Solution vs Foam: Which Is Better?
Minoxidil is available as a liquid solution and a foam. The liquid is generally cheaper and provides good scalp coverage. The foam dries faster, feels less greasy, and does not contain propylene glycol, which causes scalp irritation in some people. Both formulations are equally effective when used correctly.
What Results to Expect
Like finasteride, minoxidil requires patience. Expect an initial shedding phase in the first 2 to 8 weeks — this is a positive sign that the treatment is working. Visible improvement typically appears after 3 to 6 months of consistent daily use. If you stop using minoxidil, any gains will be lost within a few months.
Where to Buy Minoxidil in the UK
Minoxidil 5% is available over the counter at high street pharmacies including Boots and Superdrug, as well as online. Generic versions are considerably cheaper than the branded Regaine. Always purchase from a GPhC-registered pharmacy to ensure you receive a genuine, MHRA-approved product. A typical monthly supply of generic minoxidil costs between £10 and £25.