Red Light Therapy Guide - Complete Resource for Beginners & Experts

Red Light Therapy for Hair Growth: Does It Work?

Red light therapy for hair growth is one of the few RLT applications with FDA clearance. But does it actually work? Here's what the science and users say.

Evidence Level: Moderate to strong for androgenetic alopecia (pattern baldness). FDA-cleared devices exist specifically for hair growth.

How RLT Stimulates Hair Growth

  • Stimulates follicles: Light energy wakes dormant hair follicles
  • Increases blood flow: Better circulation delivers nutrients to follicles
  • Boosts cellular energy: More ATP in follicle cells
  • Extends growth phase: May prolong anagen (growth) phase

Best Devices for Hair

Laser Caps/Helmets

  • Theradome LH80 PRO: FDA-cleared, 80 lasers, recommended 2x/week
  • iRestore: Laser helmet option
  • Capillus: Various models, laser diode caps

Panels for Hair

Using a panel on your scalp works but requires longer sessions. Most effective for maintaining existing hair and stimulating regrowth.

Expected Timeline

  • 1-3 months: Reduced hair shedding
  • 3-6 months: Visible new growth
  • 6-12 months: Continued improvement

Important Notes

RLT grows hair everywhere—not just your scalp. As one Reddit user joked: "Whatever else it might do, don't forget that one of the effects is often increased hair growth rate lol."

FAQ

Q: Can RLT regrow hair on completely bald areas?

A: Most effective for thinning hair with existing follicles. Completely bald (no follicle activity) has limited results.