Red light therapy — also known as photobiomodulation (PBM) — is a non-invasive therapy that uses specific wavelengths of red and near-infrared light to interact with the body's cells.
Unlike ultraviolet light, which can damage skin, red and near-infrared wavelengths are non-ionising - and they can influence cellular function and support the body's natural repair processes.
At the heart of photobiomodulation is the mitochondria — the energy-producing part of the cell. Research suggests that certain wavelengths of red and near-infrared light are absorbed by cellular components including cytochrome c oxidase within the mitochondria. This can influence mitochondrial activity, ATP production and a range of downstream signalling pathways involved in cellular metabolism, inflammation, circulation and tissue repair. This is why LIGHT is so exciting!
One of the fascinating things about photobiomodulation is that it doesn't work by heating or damaging tissue. Instead, light acts as a biological signal.
Research has investigated PBM in areas including pain management, inflammation, wound and tissue healing, skin health, collagen production, circulation and recovery. The evidence is particularly interesting because the effects appear to depend on factors such as wavelength, dose, treatment time and the tissue being treated — meaning that more light is not necessarily better.
This is why we take a considered, proffessional approach to red light therapy rather than treating it as a one-size-fits-all wellness trend.
Think of photobiomodulation as giving your cells a light-based signal rather than adding another substance to the body.
When the appropriate wavelengths reach tissue, they can interact with cellular photoreceptors and mitochondria. Researchers believe this can influence ATP — the molecule cells use for energy — as well as reactive oxygen species, nitric oxide, calcium signalling and several cellular communication pathways. These signals can then influence processes such as cell proliferation, migration, inflammation and tissue repair.
And there is an important scientific nuance: PBM appears to have a dose-dependent response. More light isn't automatically better. Wavelength, intensity, distance, duration and total energy all matter. This is one of the reasons why professional treatment protocols are important when using higher-powered systems.
Red and near-infrared light have been particularly well studied in relation to skin rejuvenation.
Clinical research has found improvements in skin texture, fine lines, wrinkles and collagen density following LED photobiomodulation. In one controlled study involving 136 volunteers, researchers found significant improvements in skin complexion, skin roughness and measured collagen density following a course of treatments.
Another clinical study using 633 nm and 830 nm LED treatments found improvements in wrinkles and skin softness, smoothness and firmness, with microscopic examination showing evidence of thicker collagen fibres after treatment.
A later randomised clinical trial involving 137 women investigated red 660 nm photobiomodulation for facial rejuvenation, adding to the growing body of research exploring how red light may influence the visible signs of skin ageing.
The proposed mechanism is particularly interesting: laboratory and clinical research suggests that red light can influence fibroblast activity, collagen synthesis and enzymes involved in collagen breakdown. In other words, the aim isn't simply to make the skin appear temporarily different — researchers are investigating whether light can encourage some of the biological processes involved in maintaining healthy skin structure.
The potential applications of photobiomodulation extend well beyond aesthetics.
Clinical research has investigated PBM for musculoskeletal pain, tendinopathy, neuropathy, wound healing and recovery, with promising findings in several areas. A 2026 systematic review of randomised clinical trials in chronic pain found that most included studies reported reductions in pain, particularly in fibromyalgia and neuropathy, although the researchers also highlighted considerable variation between treatment protocols.
Research into tendinopathy has similarly found that PBM may provide additional benefits when combined with exercise, including reductions in pain and improvements in function.
Recent systematic reviews of near-infrared therapy and wound healing have also reported promising results, while emphasising that more standardised clinical trials are needed before firm conclusions can be drawn about the optimal wavelengths and doses.
The research around photobiomodulation is encouraging — but it is also evolving.
There is now a substantial body of laboratory, animal and human clinical research, with evidence strongest for some applications and still emerging for others. A 2025 international expert consensus concluded that PBM is a safe treatment modality for adults and supported its clinical use for several specific applications, while also highlighting areas where further research is needed.
Importantly, PBM isn't a replacement for medical treatment and it isn't a magic cure. It is best understood as a non-invasive modality that may support the body's own biological processes.
And that's what makes it so interesting.
Red Light Reset brings together the science of red and near-infrared photobiomodulation in a calm, restorative treatment environment — using light to support the body's natural capacity for recovery, renewal and wellbeing.
Reset. Restore. Recharge. Renew from Within.