Topical Non-Steroidal Anti-Androgen — Research Chemical for Hair Loss
RU-58841 is a topical non-steroidal anti-androgen research chemical used to block DHT and other androgens at the hair follicle receptor level. Unlike finasteride or dutasteride, it works locally at the scalp rather than systemically suppressing DHT production. It remains a research compound with no FDA approval.
RU-58841 competes with DHT for binding at the androgen receptor in hair follicles. By blocking androgens locally at the scalp, it prevents follicle miniaturization without significantly affecting systemic hormone levels — at least in theory. Some systemic absorption does occur.
| Parameter | Details |
|---|---|
| Starting Dose | 25 mg (0.5 mL of 5% solution) |
| Standard Dose | 50 mg (1 mL of 5% solution) |
| Frequency | Once daily |
| Route | Topical — apply to dry scalp |
| Post-Application | Wait 4+ hours before showering or wetting hair |
| Reduced Shedding | 1–3 months |
| Visible Growth | 6–12 months |
To prepare a 5% solution:
Storage
Raw powder: Store in freezer for long-term stability. Mixed solution: Store in a cool, dark place. Use within 30 days of mixing for best potency.
Research Chemical Warning
RU-58841 is not FDA-approved and has no completed human clinical trials. Quality control varies between suppliers. Systemic absorption can cause cardiovascular symptoms. Use at your own risk under informed supervision.
This guide is for educational and clinical-support purposes only. All dosing must be supervised by a licensed prescriber. Matrix Advanced Solutions does not provide medical advice. Always consult your healthcare provider before starting any hair-loss protocol.