Low-Level Laser Therapy as an Effective Intervention for Facial Pigmentation: A Case Report of Ephelides and Lentigines in Syrian Women

What the authors concluded

The first case involved a 34-year-old woman with Fitzpatrick skin type II presenting with facial ephelides, while the second case featured a 49-year-old woman with Fitzpatrick skin type III diagnosed with solar lentigo. Both patients underwent 12 sessions from June 1 to August 1, 2023, using a red diode laser (660 nm) at a power density of 15.6 mW/cm2 and a dose of 5.6 J/cm2, applied for 6 min pe

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 5.6 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.