Research you can actually inspect.
NrG links directly to representative human studies so you can see the wavelength, device type, protocol, population, and outcome for yourself.
A substantial field—with protocol-dependent results.
A 2025 umbrella review synthesized 15 meta-analyses covering 204 randomized clinical trials and more than 9,000 participants. It found meaningful effects for some outcomes, while the certainty of evidence for many endpoints remained low to moderate.
Nine channels. Nine research snapshots.
Each card points to human research at the NrG wavelength or, where clearly labeled, a nearby wavelength. Exact study parameters differ from NrG hardware.
Nearby green body-contouring research
A randomized sham-controlled study using nearby 532 nm green low-level laser light reported improvements in cellulite appearance and thigh circumference. NrG uses 530 nm LEDs, so the study is relevant research context—not proof or a guarantee of body-contouring results from an NrG panel.
532 nm body-contouring study · PMID 23508376 →Wrinkle & photoaging research
A randomized split-face trial compared 590 nm and 660 nm at the same dose and reported reduced periocular wrinkle volume with both wavelengths. Separate 590 nm studies have examined photoaging, texture, and background erythema.
590 + 660 nm RCT · PMID 36780572 → 590 nm photoaging study · PMID 15624743 →Skin texture, collagen & wrinkle research
Randomized human LED studies around 630–633 nm have reported changes in wrinkle appearance, elasticity, and collagen-related measures. A 2025 sham-controlled study also evaluated 630 nm combined with 850 nm for crow’s-feet appearance.
633 / 830 nm study · PMID 17566756 → 630 + 850 nm RCT · PMID 39960921 →Skin appearance & active-lifestyle research
A randomized cosmetic trial directly evaluated 660 nm LED light for wrinkle appearance. Broader reviews of red and near-infrared PBM trials in healthy people have examined exercise performance and fatigue, with substantial variation in devices, wavelengths, doses, and results.
590 + 660 nm cosmetic RCT · PMID 36780572 → Exercise PBM review · PMID 29090398 →Mixed-wavelength fitness research
A randomized trial in healthy volunteers used 670 nm LEDs together with 875 nm LEDs and 905 nm lasers before exercise and reported performance and post-exercise outcomes. Because the intervention combined wavelengths and light sources, it does not establish a 670 nm-only benefit.
Mixed-wavelength exercise RCT · PMID 24942380 →Neural-activity & sleep-wellness research
A randomized double-blind study evaluated 810 nm transcranial PBM and measured changes in neural oscillations. A separate randomized study used a 660/740/810/870 nm head-and-neck device and found self-reported sleep, relaxation, and mood improvements, while objective actigraphy outcomes did not differ from sham.
810 nm neural-activity RCT · PMID 31004126 → Multiwavelength sleep/wellness RCT · PMID 37141002 →Skin appearance & healthy-volunteer research
830 nm appears in randomized LED skin-rejuvenation research measuring wrinkle appearance, elasticity, and collagen-related outcomes. A separate randomized study in healthy volunteers measured a short-term microcirculatory response after 830 nm exposure.
830 / 633 nm skin RCT · PMID 17566756 → Healthy-volunteer 830 nm study · PMID 32064652 →Muscle & performance research
A randomized study in volleyball athletes used 850 nm PBM before training and reported strength-related benefits. Separate 2025 human research evaluated 850 nm together with 630 nm for skin appearance.
850 nm athlete RCT · PMID 31402432 → 630 + 850 nm skin RCT · PMID 39960921 →Nearby 1064 nm working-memory research
NrG uses 1060 nm LEDs. A human transcranial study at nearby 1064 nm used a laser on a specific right-prefrontal location and reported improved visual working-memory capacity. This adjacent-wavelength, different-device study does not establish the same outcome for an NrG panel.
1064 nm human study · PMID 36459562 →