Red Light Therapy for Androgenetic Alopecia (Hair Loss)
Androgenetic alopecia is the most common form of hair loss, affecting up to 50% of men and 40% of women. It is characterized by progressive miniaturization of hair follicles due to genetic sensitivity to dihydrotestosterone (DHT).
Prevalence: Affects approximately 50% of men by age 50 and 40% of women by age 70
Evidence Summary
14 human RCTs 6 human non-RCTs
How Red Light Therapy Helps
Red light stimulates dermal papilla cells, extends the anagen (growth) phase, increases follicular blood flow, and reduces peri-follicular inflammation. Multiple FDA-cleared devices exist specifically for this indication.
Recommended Wavelengths
Treatment Protocols
Recommended Devices
Device-Specific Treatment Guides
iRestore Professional for Hair Loss
Megelin Hair Growth Cap for Thinning Hair
iRestore Professional for Female Hair Loss
Megelin Cap for Convenient Hair Treatment
Joovv Solo 3.0 for Hair Growth
MitoRed MitoPRO 300 for Hair Growth
Body Zones
Related Conditions in Dermatology
Research Basis
This content is informed by 47+ published peer-reviewed studies on photobiomodulation.
RedLightOS Research Team
Photobiomodulation Research
The RedLightOS team reviews over 9,500 published photobiomodulation studies to deliver evidence-based red light therapy guidance.
Reviewed by RedLightOS Research Team. Last reviewed: . Based on published photobiomodulation research. For educational purposes only — not a substitute for professional medical advice. See our methodology.
Medical Disclaimer: This content is for informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Red light therapy devices are wellness devices and are not intended to diagnose, treat, cure, or prevent any disease. Individual results may vary.