Red light
HigherDOSE Red Light Hat
HigherDOSE
Cordless baseball-style cap with 120 red LEDs at 650 nm, used 10 minutes a day. Price: $449, checked Oct 3, 2026; HigherDOSE says it is FSA/HSA eligible and offers a 120-day money-back guarantee. Regulatory: FDA-cleared (K242363, Nov 2024) for over-the-counter use to treat androgenetic alopecia (pattern hair loss) in men (Norwood-Hamilton IIa-V) and women (Ludwig-Savin I-1 to II-2 or frontal) with Fitzpatrick skin types I-IV; not cleared for other types of hair loss. FDA's summary says clinical testing was not needed for the clearance. Evidence grade: B (for the device category, androgenetic alopecia only; not graded for this specific device or for other types of hair loss). A 2025 meta-analysis of 38 studies (about 2,930 people with androgenetic alopecia) found a larger increase in hair density with light therapy devices than with placebo or sham after 4-26 weeks, but results varied widely between trials and many trials were small or funded by device makers. For LED-only devices, a 2025 sham-controlled trial of a red/blue LED cap missed its primary endpoint in each treatment arm. Goals: hair. Directory: Red light > Laser & LED hair caps.
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