Two treatments have the strongest evidence for pattern hair loss: topical minoxidil and oral finasteride (the latter for men, on prescription). Both work by slowing loss and thickening existing hair — and both stop working if you stop using them.
Everything else falls into three groups: promising with mixed evidence (PRP, microneedling, laser devices), useful only if you have a proven deficiency (iron, vitamin D), or marketing.
The hair loss market is crowded with products that make confident claims on thin evidence. This guide from HairX Clinics sorts them by what the research actually supports.
Diagnose before you treat
This is the step most people skip, and it wastes more money than any bad product.
Hair loss from iron deficiency, thyroid dysfunction or telogen effluvium is reversible by treating the cause. Hair loss from androgenetic alopecia is not — it needs ongoing management. Using a pattern-baldness treatment on a thyroid problem will not work, and vice versa.
A basic workup usually includes full blood count, ferritin, thyroid function and vitamin D, alongside a physical examination of the scalp. See our guide to hair loss causes and when to worry for what to look for.
Treatments with strong evidence
Topical minoxidil
Available over the counter as a 2% or 5% solution or foam. It is thought to extend the growth phase and improve blood flow to the follicle. It is approved for pattern hair loss in both men and women.
What to expect: shedding often increases in the first few weeks as follicles reset their cycle — this is expected and not a reason to stop. Visible benefit usually takes three to six months. Benefit is lost within months of stopping.
Oral finasteride
A prescription tablet that reduces DHT, the hormone driving pattern baldness. Evidence for slowing loss and increasing count in men is well established.
Treatments with mixed or emerging evidence
| Treatment | Where the evidence stands |
|---|---|
| PRP (platelet-rich plasma) | Several studies show benefit, but protocols vary widely between clinics, making results hard to compare. Best regarded as an adjunct, not a replacement |
| Microneedling | Some evidence it improves results when combined with minoxidil. Weaker evidence on its own |
| Low-level laser therapy | Some devices are regulatory-cleared and trials show modest gains. Effect size is generally smaller than minoxidil |
| Topical finasteride | Aims to reduce systemic exposure. Early evidence is encouraging but less extensive than for the oral form |
| Ketoconazole shampoo | Limited evidence as a mild adjunct, mainly where scalp inflammation is present |
What the evidence does not support
- Biotin, unless you are deficient. True biotin deficiency is rare. Supplementing without it does not regrow hair — and high-dose biotin interferes with some blood tests, including thyroid and cardiac markers
- Most “hair growth” oils and serums. Scalp massage may feel good and improve local circulation, but no oil reverses androgenetic alopecia
- Onion juice, rosemary and home remedies. A few small studies exist for rosemary oil, but the evidence is thin compared with established treatments
- Anything promising results in weeks. The hair growth cycle does not move that fast. Any honest treatment needs three months before it can be judged
- Anything sold with a before-and-after photo but no named active ingredient
When does surgery become the answer?
Medical treatment protects and thickens the hair you still have. It does not bring back follicles that are already gone.
A transplant becomes relevant when an area is genuinely bald rather than thinning, and when you have adequate donor supply at the back and sides. Even then, most surgeons recommend continuing medical treatment afterwards — because a transplant does not stop loss in the untreated areas. See what actually lasts after a transplant.
Find out which stage you are actually at
At HairX Clinics we examine the scalp, assess whether follicles are miniaturising or already lost, and tell you honestly whether medical treatment alone is the right next step.
Frequently asked questions
How long before I see results?
Three months at the earliest for any treatment, six to twelve months for a fair assessment. The hair cycle sets this pace and nothing shortens it. Judging a treatment at four weeks tells you nothing.
What happens if I stop treatment?
For minoxidil and finasteride, the benefit is lost. Hair that was maintained by treatment reverts to its natural progression over the following months. These treatments manage a condition rather than curing it.
Can I combine treatments?
Combinations are common, and minoxidil with finasteride is a frequently used pairing in men. Any combination involving prescription medication should be supervised by a doctor.
Do treatments work for women?
Minoxidil is approved for women. Finasteride is generally not used in women of childbearing potential due to pregnancy risk. Women should be assessed for iron, thyroid and hormonal causes first, since a treatable cause is more common than in men.
Is there anything new in development?
Research into follicle regeneration and newer signalling pathways is ongoing, but nothing has replaced the established treatments in routine practice. Be cautious of clinics marketing experimental therapies as proven.
The bottom line
Get diagnosed first. If it is pattern hair loss, minoxidil and — for men, with medical advice — finasteride are the treatments with real evidence behind them. Adjuncts like PRP and microneedling may add something. Most other products do not.
And treat early. Protecting a follicle that is thinning is far easier than replacing one that is gone.
See your result before you book. A full year of it, from photos on your phone.
HairX is the first hair transplant clinic in the world to show you the twelve-month result and the graft count you need before you speak to anyone. It is free and it takes minutes. The report covers your stage of hair loss, what your donor area can realistically give, and how the result comes in month by month, including the third month, when it looks worse before it gets better.
One comment