Use of nonthermal blue (405- to 420-nm) and near-infrared light (850- to 900-nm) dual-wavelength system in combination with glycolic acid peels and topical vitamin C for skin photorejuvenation.

What the authors concluded

Patients from [PBM group] found an improvement in four criteria after the last treatment, with a steady result 3 months after the last treatment (4-month followup). One month after the last treatment (2-month follow-up), 80% of patients thought that they were improved on skin radiance, 85% on pore size, 50% on rhytids, and 75% on skin tone. Beside that, the independent observer noticed on photogr

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 60 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.