Efficacy of low-level laser therapy on hair regrowth in dogs with noninflammatory alopecia: a pilot study.

What the authors concluded

By morphometry, the area occupied by hair follicles was 18% in the treated sample and 11% in the untreated one (11%)" "Haired follicles were (per area) 93% in the treated sample and only 9% in the control sample." Comment: Article has some nice photographs of the LLLT device/treatment and the effects.

Devices that emit this wavelength

Matched on wavelength within 15nm, since LED bins vary by roughly that much and a tighter match would be false precision. Where we have an irradiance figure, the session length is the time needed to reach this study's dose of 3 J/cm² at that intensity.

Matching a wavelength is not the same as reproducing a trial. Session times assume the device's published irradiance is accurate at the distance it was measured, which on brand-claim figures is often optimistic. Where a device publishes both a peak and an average we use the average, and where it publishes a falloff curve we use the lowest figure, so these times run long rather than short. Clinical protocols also control for spot size, contact and skin type in ways a home device cannot.