LED Light and Skin Care: The Science, the Benefits, and How to Use It Well
The relationship between LED light and skin care has moved from clinical curiosity to mainstream wellness conversation in the span of a few decades. Today, LED therapy is used in dermatology offices, medical spas, and increasingly in people's own homes, thanks to a growing range of well-designed at-home devices.
But what exactly does LED light do to the skin? Which wavelengths matter, and why? And how does the science support the benefits that are so often claimed?
This guide takes a closer look at the evidence, the technology, and how to make the most of LED therapy as part of a considered skincare approach.
What Is LED Phototherapy?
LED stands for light-emitting diode. In the context of skin care, LED therapy involves exposing the skin to specific wavelengths of visible or near-infrared light at low intensities. Unlike lasers or intense pulsed light (IPL), which rely on high-energy light to cause controlled tissue damage, LED therapy is non-ablative and non-thermal. It does not damage the skin. Instead, it works by stimulating biological processes within cells.
The mechanism is known as photobiomodulation. When certain wavelengths of light are absorbed by chromophores in the skin, particularly by cytochrome c oxidase within the mitochondria, they trigger a cascade of cellular events. Most significantly, this includes an increase in the production of ATP (adenosine triphosphate), the molecule that provides energy for virtually every cellular function.
More energy in the cell means more capacity for repair, regeneration, and the synthesis of structural proteins like collagen and elastin.
Key Wavelengths and What They Do
Different wavelengths of light penetrate the skin to different depths and stimulate different biological responses. Understanding this is central to understanding why LED is used for such a range of skin concerns.
Red light, typically in the 630 to 660nm range, penetrates to the level of the dermis and has the most established evidence base for collagen stimulation and anti-aging effects. A landmark study published in the Journal of Investigative Dermatology found that pulsed 660nm LED treatment increased type-1 procollagen levels by a mean of 31% in treated tissue models and led to measurable improvements in skin texture, with 87% of participants showing reductions in wrinkle depth after 12 treatments.
A prospective, randomized, placebo-controlled split-face study published in the Annals of Dermatology assessed LED phototherapy across three different treatment settings and found objectively measured reductions in wrinkles of up to 36% and increases in skin elasticity of up to 19% compared to baseline, alongside histological evidence of increased collagen and elastic fibers in treated tissue.
Near-infrared (NIR) light, typically in the 810 to 850nm range, penetrates more deeply into the dermis and underlying tissue. It is particularly effective for reducing inflammation, improving circulation, and supporting tissue repair in deeper layers. This makes it a useful complement to red light in combined treatment protocols.
Blue light, around 415nm, does not penetrate deeply but is effective at targeting propionibacterium acnes, the bacteria associated with acne breakouts. Blue light is commonly combined with red light for treating blemish-prone skin.
LED Light Therapy for Anti-Aging
Of all the applications of LED in skin care, the evidence for anti-aging benefits is the most mature. Red light's ability to stimulate fibroblasts, the cells responsible for producing collagen and elastin, is well documented.
Collagen is what gives skin its structural integrity and firmness. From the mid-twenties, the body naturally produces less of it, and the visible result is the gradual development of fine lines, looser skin texture, and reduced elasticity. Red light therapy supports the body's own collagen production, working with natural biological processes rather than against them.
NIR light at 850nm adds another dimension by reaching beyond the skin surface to influence the deeper dermis. When red and NIR wavelengths are combined, they address multiple layers of skin concern simultaneously: texture and tone at the surface, and firmness and structural support at depth.
Combining LED with Skincare Products
One of the more underappreciated aspects of LED therapy in a skin care context is how it can influence the absorption and efficacy of topical products.
Research suggests that pulsed LED light may temporarily increase skin permeability, making it more receptive to active ingredients applied before a session. Antioxidant-rich serums applied prior to LED treatment may benefit from enhanced bioavailability, allowing ingredients to penetrate more effectively.
This is a key principle behind Maysama's combined approach. The brand's Green Rooibos Pressed Serum is formulated with Aspalathin, a flavonoid from the rooibos plant, and is designed to be used alongside LED therapy.
Independent testing found that combining the serum with LED treatment can lead to enhanced results in skin rejuvenation parameters such as skin elasticity and wrinkle reduction compared to LED treatment alone. This suggests a meaningful synergistic benefit when the two are used together.
When pairing topical products with LED therapy, it is generally recommended to apply the product to clean skin before the session, allowing the light therapy to enhance absorption as part of the treatment.
Pulsed LED vs. Continuous Wave LED
A growing area of interest in LED skin care is the difference between continuous wave light, where the LED emits a constant beam, and pulsed light, where it cycles on and off in rapid patterns.
A study by Brondon et al. examined the effect of pulsed red light on cell proliferation using melanin filters to simulate melanin-rich skin. The study found that pulsed light increased cell proliferation compared with continuous light, with the effect maximal at a pulse frequency of 100Hz.
This in vitro research offers interesting insight into how pulsing may help light overcome melanin's filtering effect at a cellular level.
Read more about the science behind pulsed LED.
This is why Maysama's devices, including the AURA LED Light Therapy Face Mask, use Intelligent Micro-pulsing Technology rather than standard continuous wave delivery. With 155 dual light-emitting diodes and a cordless, close-contact design, the AURA mask is engineered to support even light distribution and a more revitalised-looking complexion.
Clinical studies cited on the product show LED phototherapy is associated with up to a 36% reduction in wrinkle severity, consistent with the broader research landscape.
Who Can Use LED Light Therapy?
LED therapy has a favorable safety profile and has been studied across all skin types and tones. Because it does not rely on targeting pigment and does not generate heat-induced tissue damage, it does not carry the same risks as higher-intensity treatments like IPL or ablative lasers.
Those with photosensitizing medications or medical conditions affecting light sensitivity should consult a healthcare professional before using LED devices. People prone to light-induced headaches should also exercise caution. Beyond these considerations, LED therapy is generally well tolerated.
Most research protocols use sessions of between 6 and 20 minutes, three to five times per week, with consistent use over a period of weeks needed to see meaningful results. More is not always better: the biphasic dose response means that overly long sessions can reduce efficacy, which is why recommended treatment times should be followed.
Building LED Into Your Skin Care Routine
The most effective way to incorporate LED light therapy into skin care is to treat it as a consistent practice rather than an occasional add-on.
Start with clean, product-free skin, or apply a compatible serum before your session. Protect your eyes with any provided goggles or eye protectors, especially if the device emits blue light. Keep sessions within the recommended time window for your device. Follow up with your usual moisturizer or serum routine after the session.
Consistency over weeks and months is what produces visible change. Most users begin to notice a difference in skin tone and texture within four to twelve weeks of regular use, with continued improvement over time.
The Bigger Picture
LED light and skin care are not a trend built on marketing alone. There is a solid and growing body of peer-reviewed research supporting the effects of red and near-infrared light on collagen synthesis, skin inflammation, cellular energy, and overall skin health. The key is choosing devices built around clinically relevant wavelengths, using them consistently, and pairing them with complementary skincare products where possible.
Whether you are addressing signs of aging, managing reactive or blemish-prone skin, or simply looking to support your skin's health over time, LED therapy offers a non-invasive, evidence-informed option that can fit into most routines.
Explore Maysama's range of science-led LED devices and skincare for a complete starting point: Maysama beauty devices collection.
