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Two routes, one strategy
In contemporary trichology, practically no patient with androgenetic alopecia is treated via a single route. The optimal strategy combines oral treatment, topical treatment and, depending on the case, injectable medicine (mesotherapy, PRP, exosomes). Each route has a distinct role and, above all, achieves a distinct objective.
This article is not a prescription — prescriptions are always made by a doctor — but it is a clear guide to understanding why many patients end up combining the two routes and what each contributes.
Oral treatment: acting on the cause
Oral treatments for alopecia have a decisive advantage: they act systemically and usually address the hormonal or vascular cause of the problem, not just the visible consequence.
Oral Finasteride
Finasteride is an inhibitor of 5-alpha-reductase type II, the enzyme that converts testosterone into dihydrotestosterone (DHT). DHT is the main culprit for follicular miniaturization in male androgenetic alopecia.
- Main indication: male androgenetic alopecia.
- Usual dose: 1 mg/day orally.
- Results: stabilization of hair loss in most patients and regrowth in a significant proportion, visible at 3–6 months.
- Safety profile: well tolerated in most patients; sexual side effects occur in a minority percentage that should be openly discussed with the doctor before starting.
Oral Dutasteride
Inhibits both types of 5-alpha-reductase (I and II), reducing DHT to a greater extent than finasteride.
- Indication: androgenetic alopecia with insufficient response to finasteride or when greater potency is desired from the start.
- Usual dose: 0.5 mg/day.
- Results: usually superior to finasteride, with a comparable tolerance profile.
Low-dose oral Minoxidil
One of the biggest recent transformations in trichology. Oral minoxidil in low doses (0.25–2.5 mg/day) has shown efficacy and excellent tolerance.
- Indication: male and female androgenetic alopecia, chronic effluvium, intolerance to topical minoxidil.
- Mechanism: vasodilation and influence on the anagen phase of the hair cycle.
- Advantage over topical: simplicity — one tablet instead of twice-daily application; uniform absorption; no local flaking.
- Considerations: monitor blood pressure, possible fluid retention, facial hypertrichosis in women (reason for dose adjustment).
Spironolactone in women
In female alopecia with an androgenic component, oral spironolactone, an androgen receptor antagonist, may be considered. Indicated by a specialist doctor, it is usually combined with oral minoxidil.
Supplementation
Iron, vitamin D, zinc, biotin, specific complexes. These only make sense when there is a demonstrated deficiency in lab tests. Blind supplementation is marketing, not medicine.
Topical treatment: reinforcement at the follicle
Topical treatment acts locally, on the scalp. It does not replace the oral route in established alopecias, but it complements it and, in mild or preventive cases, may be sufficient.
Topical Minoxidil
The classic. 2% or 5% solution or foam, applied once or twice a day.
- Mechanism: vasodilation and stimulation of the anagen phase.
- Results: visible at 3–6 months with continuous use.
- Limitations: many patients abandon it due to the tedious routine, its effect on styling, or flaking. If your adherence is low, discuss oral minoxidil with your doctor.
Lotions with growth factors, peptides, and antioxidants
There are topical formulations with bioactive cocktails. They are reasonable support but are not the backbone of treatment.
Specific shampoos
Shampoos do not cure alopecia — that should be clear. But they fulfill real functions:
- Ketoconazole shampoos — antifungal that reduces seborrheic dermatitis and associated follicular inflammation.
- Anti-dandruff shampoos with zinc pyrithione or salicylic acid — to maintain a healthy scalp.
- Shampoos with caffeine or other active ingredients — modest adjuvant effect.
An inflamed or seborrheic scalp accelerates miniaturization. Caring for it is part of the treatment, even if it is not the treatment itself.
Maintenance hair cosmetics
For existing hair (shaft quality, shine, texture), masks, serums, and leave-in products come into play. They do not stop hair loss, but they contribute to the perception of density and the health of existing hair.
When to choose oral, when topical, when both
| Profile | Strategy |
|---|---|
| Established androgenetic alopecia | Oral (finasteride/dutasteride) ± oral minoxidil, reinforcing mesotherapy/PRP |
| Female androgenetic alopecia | Oral minoxidil ± spironolactone, mesotherapy |
| Mild hair loss, preventive phase | Topical + hair mesotherapy |
| Postpartum telogen effluvium | Treat cause + topical or oral minoxidil during the episode |
| Intolerance to topical minoxidil | Switch to low-dose oral minoxidil |
| Seborrheic scalp | Ketoconazole shampoo + basic treatment |
In practice, the average patient with androgenetic alopecia we see in consultation ends up with a regimen similar to this: oral finasteride or dutasteride + oral or topical minoxidil + cycles of mesotherapy or PRP each year. This combination is what best stabilizes hair loss and produces sustained regrowth.
What no product replaces
Before optimizing treatment, it is advisable to rule out and correct:
- Iron deficiency anemia.
- Deficiency of vitamin D, vitamin B12, zinc.
- Thyroid pathology.
- Androgenic overload in women.
- Chronic stress, poor sleep, restrictive diet.
Optimizing the foundation is not optional. It's the first step.
How long until results are seen
A useful rule for managing expectations:
- 3 months: stabilization (hair stops falling out more).
- 6 months: first visible regrowth.
- 12 months: consolidated result evaluable with comparative trichoscopy.
Any serious evaluation of treatment is done at 6–12 months minimum. Before that is noise.
Frequently asked questions
Is oral minoxidil safe? In low doses, with prior medical evaluation and follow-up, yes. There are decades of use in cardiology at much higher doses; trichological doses are a fraction.
Does finasteride cause impotence? Sexual side effects occur in a minority percentage of patients, generally reversible upon discontinuation. This should be openly discussed before starting.
Can I stop treatment when I see results? No. Androgenetic alopecia is chronic. If you stop, the process resumes. Treatment maintains, it does not cure.
Do injectable treatments replace oral ones? No. They are complementary. Injectable medicine reinforces the underlying medical treatment, it does not replace it.
Can I combine oral, topical, and mesotherapy? Yes. In fact, the combination is usually optimal.
Book your hair consultation at Santé Clinics
The correct treatment depends on the diagnosis. Before deciding between oral, topical, or injectable, schedule an assessment with our medical team specialized in trichology at Avenida Diagonal 384, Barcelona.
Write to us via WhatsApp at +34 699 14 58 87.
