Finasteride + Microneedling: Evidence & Protocol
Medically reviewed by [Reviewer Name, MD] | Last reviewed: August 2026 | Editorial policy
Bottom line: Microneedling (dermarolling) combined with finasteride and/or minoxidil appears to significantly enhance hair regrowth vs. medication alone, based on several small but well-designed RCTs. The mechanism involves wound-healing growth factor upregulation and improved topical penetration. This combination is gaining traction in dermatology practice despite limited large-scale evidence.
Key Evidence
Dhurat et al. (2013) published a landmark RCT showing microneedling (1.5 mm dermaroller, weekly) + minoxidil significantly outperformed minoxidil alone in hair count improvement. Subsequent studies have combined microneedling with finasteride regimens with similar additive benefit. The proposed mechanism is platelet-derived growth factor (PDGF) and Wnt signaling upregulation following controlled dermal injury, which promotes anagen.
General Protocol Guidance
| Parameter | Typical approach |
|---|---|
| Needle length | 0.5–1.5 mm (home roller: 0.5 mm; clinical: 1–1.5 mm) |
| Frequency | Once weekly (clinical); once every 10–14 days (home) |
| Target area | Affected scalp zones only; avoid hairline skin edges |
| After microneedling | Apply topical minoxidil or topical finasteride (if prescribed) within 1–2 hours post-needling to maximize absorption |
| Oral finasteride | Continue daily as prescribed; timing relative to needling is irrelevant for oral dosing |
Note: Do not share dermarollers. Sterilize with 70% isopropyl alcohol before and after each use. Replace the roller every 3–6 months as needle sharpness diminishes. A dermatologist can guide whether clinical microneedling (Dermapen) or home rolling is appropriate for your case.
See: Finasteride + minoxidil | Finasteride + ketoconazole | Topical finasteride