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TB-4 Hair Growth Protocol: Administration Schedule Comparison
4 weeks (short cycle) Twice weekly 3–4mg 6–8mg Initial response assessment; researchers testing individual tolerance before committing to longer protocols Adequate for preliminary data but insufficient to capture full anagen extension. Follicle cycling timelin
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This page preserves a source comparison for education. It does not add a rating, recommendation or clinical judgment.
- 4 weeks (short cycle)
- Twice weekly
- 3–4mg
- 6–8mg
- Initial response assessment; researchers testing individual tolerance before committing to longer protocols
- Adequate for preliminary data but insufficient to capture full anagen extension. Follicle cycling timelines exceed 4-week windows
- 8 weeks (standard cycle)
- 2–3mg
- 4–6mg
- Most common research duration; aligns with one complete early-anagen phase in responsive follicles
- Gold standard for balancing observable outcomes with reagent cost. Captures telogen-to-anagen transition in most follicle populations
- 12 weeks (extended cycle)
- 2mg
- 4mg
- Long-duration studies assessing sustained anagen prolongation and density changes across full follicle cohorts
- Preferred for comprehensive data collection; allows follicles in staggered cycles to enter anagen under TB-4 influence
- Maintenance (post-cycle)
- Once weekly
- Following an 8–12 week induction phase; intended to sustain VEGF signaling without continuous high-dose exposure
- Experimental. Limited published data; some researchers report maintained density, others observe gradual regression toward baseline