590 nm yellow light is an uncommon visible-light channel with growing human skin research. Studies have examined sensitive skin, redness, skin barrier function, melanin/complexion measures, sting response and photoaging-related outcomes such as wrinkles.
Yellow light occupies a skin-focused part of the visible spectrum and has been studied in both standalone and combination LED protocols.
Human research has examined 590 nm yellow light for sensitive-skin scores, erythema, transepidermal water loss, sting response and melanin index—measures related to visible redness, comfort and skin-barrier function.
Yellow-light protocols have also been studied for photoaging-related measures including wrinkles, texture and brown spots. Independent control lets the NrG yellow channel be used alone or combined with red and near-infrared light.
PBM wavelength basics →Recent human studies make this one of the more interesting less-common visible channels for skin-focused photobiomodulation research.
A 2026 randomized controlled trial found that 590 nm yellow LED treatment improved sensitive-skin scores and significantly reduced erythema index, melanin index and transepidermal water loss while also improving sting-test response compared with control.
A randomized exploratory study using 590 nm yellow light together with red and near-infrared LEDs reported improvements in global photoaging and wrinkle scores after eight weeks. Because it was a combination protocol, the result reflects the full light combination rather than yellow light alone.
Laboratory research in human epithelial cells has examined exact 590 nm light for wavelength-dependent effects on cell morphology, signaling and tight-junction proteins—mechanisms relevant to how tissues maintain barrier structure.
It adds an independently controlled yellow-light option with human research centered on sensitive skin, visible redness, barrier function and photoaging-related skin measures.
Aura, Aurora and Phoenix use the full nine-channel NrG Light spectrum, and each channel can be independently adjusted from 0–100%.
Nine independently controlled wavelengths in a compact tabletop format.
View Aura →Nine-channel spectrum with broad coverage and flexible positioning.
View Aurora →Full-body coverage with nine independently controlled wavelength channels.
View Phoenix →Research findings describe specific study protocols and should not be treated as guaranteed outcomes from a different device, dose, distance or schedule.
Human research areas include sensitive skin, visible redness, skin-barrier function, melanin and complexion measures, sting response, wrinkles and photoaging-related skin changes.
NrG-AURA, NrG-AURORA and NrG-PHOENIX include an independently controlled 590 nm channel.
Yellow light adds a distinct skin-focused visible-light channel that can be used independently or combined with red and near-infrared light.
Yes. Aura, Aurora and Phoenix allow the 590 nm channel to be adjusted independently from the other wavelength channels.