Red Light Therapy devices are valuable beauty tools and one of the most reliable, clinically proven ways to stimulate hair growth (sleek, futuristic designs only add to the attraction).
A quick note on how RLT works: visible light spans a range of wavelengths, with red light on the upper end at roughly ~600-700 nm. Light in this range has been scientifically proven to heal and stimulate cell growth — essentially giving your hair and skin a gentle push to produce molecules like the proteins that build collagen.
Lab research has shown that both 5 and 10 minutes of Red Light Therapy on a regular basis increases the mean length of hair shaft growth (source). Hair follicles exposed to red light for 5 minutes grew noticeably longer than those with no light exposure, while a duration of 10 minutes didn’t produce a meaningful amount of additional growth (but also did no harm).
To give some context, below is some key information on a few RLT hair growth devices:
| Device | Use time | Wavelength |
|---|---|---|
| CurrentBody (helmet) | 10 min | 620 nm |
| Laduora (wand) | 5 min | 660 nm |
| HigherDOSE (hat) | 10 min | 650 nm |
It’s such an easy and simple tool to use as part of your routine, plus, setting aside 5-10 minutes to relax and meditate (while wearing a device or not) is always nice.