The Red Light Cap is a consumer brand focused on at-home red light therapy for men concerned about thinning hair. Its main product, also called The Red Light Cap, is a wearable device designed to support scalp health and hair regrowth by stimulating hair follicles with 660 nm red light and 830 nm near-infrared light. The cap contains 168 medical-grade diodes and delivers a 15-minute session using a built-in timer, final-minute alert, and automatic shutoff.

It can be used at home or on the go and has a removable, rechargeable battery rated for up to four sessions per charge. The brand recommends using the device four to five times per week and emphasizes consistent use over time. It cites published clinical research on low-level light therapy, reporting a 35–51% increase in hair count over 16 weeks, while noting that individual results vary.

The cap is sold through the brand’s online store for $498. The website also provides information about how red light therapy works and offers social media updates