Red and near-infrared light support a healthier scalp and fuller-looking hair, whether you are noticing more shedding, a wider part or a thinning crown. Hands-free caps that fit into everyday life, from an easy wireless LED cap to full laser systems.
Support thinning hair with photobiomodulation
What research says about red light, the scalp and hair density.
What research shows
Controlled trials and a 2024 review of 58 studies link low-level light therapy with increased hair density and thicker strands in pattern thinning.
Why it works
Red light is absorbed by the follicle cells' energy centres, supporting cell activity and scalp circulation, which keeps active follicles in their growth phase longer.
Relevant wavelengths
650–660nm red is the most studied band for hair; 850nm near-infrared reaches deeper towards the root. Lasers focus light, LEDs spread it across the scalp.
Read the guide: Red Light Hair Cap at Home: Questions People Ask · The Complete Guide
References: Lanzafame et al. 2014 · Jafari et al. 2024 (systematic review)
FAQ
Red light supports scalp circulation and follicle activity, helping hair look fuller and stronger over time. It works best on early to moderate thinning, where follicles are still active. Used consistently, most people look for visible change after 4–6 months. Results vary.
Match the cap to how widespread your thinning is: the 7HW StrandAir for early thinning and busy routines, the 7HW StrandPro for noticeable thinning at the crown or temples, and the 7HW StrandElite for thinning across the whole scalp.
It suits most adults with gradual thinning. If your hair loss is sudden, patchy or painful, or you are pregnant or light-sensitive, check with your doctor first.
