LED therapy is not light in the sense of a warm lamp. It is specific wavelengths of light at precise power densities, absorbed by specific molecules in the skin, triggering specific biological responses. The term 'photobiomodulation' describes this exactly, light modifying biology.
How photobiomodulation works
The key concept in LED therapy is selective photon absorption. Different molecules in the skin, called chromophores, absorb different wavelengths of light and respond to that absorption by changing their function. The most important chromophore in skin biology is cytochrome c oxidase, the terminal enzyme in the mitochondrial electron transport chain, the cellular machinery that produces ATP.
When cytochrome c oxidase absorbs red and near-infrared light, it becomes more active, accelerating ATP production, increasing cellular energy and triggering a cascade of downstream effects including improved protein synthesis, reduced inflammation and enhanced cellular repair. This is the mechanism behind the anti-ageing and wound-healing applications of LED therapy.
Red light (630–700nm): collagen and anti-ageing
Red light at 630–700nm is the most extensively studied wavelength in photobiomodulation research. Its primary biological effect in skin is the activation of fibroblast metabolism via cytochrome c oxidase stimulation, producing increased collagen and elastin synthesis, improved skin density and measurable improvements in fine lines and skin quality. Multiple peer-reviewed studies have demonstrated these effects using standardised measurement methods.
Red light also improves local circulation, enhancing nutrient delivery and waste removal in the treated tissue. The combination of improved cellular metabolism and better circulation produces the luminosity and improved skin quality that clients consistently notice following a course of red LED therapy.
Near-infrared (800–900nm): tissue repair and inflammation
Near-infrared light penetrates more deeply than visible light, reaching into the dermis and subcutaneous tissue rather than primarily acting in the epidermis and superficial dermis. Its primary clinical application in aesthetics is post-treatment recovery: applied following microneedling, chemical peels or laser, near-infrared light reduces the inflammatory response, accelerates tissue repair and shortens recovery time significantly.
This is the same mechanism that has made near-infrared photobiomodulation a standard adjunct in sports medicine and wound healing for decades, applied to aesthetics, it dramatically reduces the downtime associated with procedures that intentionally create controlled tissue injury.
Blue light (415–445nm): acne bacteria
Blue light at 415–445nm has a specific and clinically significant effect on Cutibacterium acnes (formerly Propionibacterium acnes), the bacteria responsible for inflammatory acne. C. acnes produces endogenous porphyrins as metabolic by-products. These porphyrins are highly sensitive to blue light: when activated by the 415nm wavelength, they produce reactive oxygen species that destroy the bacteria from within.
This makes blue LED therapy a genuine antibiotic-free treatment for active acne, not as dramatic as oral antibiotics in severe cases, but consistently effective for mild to moderate inflammatory acne and an excellent maintenance therapy between clinical acne treatments.
LED as a standalone and as an enhancement
LED's particular clinical value lies in its versatility and safety profile. It has essentially no contraindications, produces no thermal damage, and can be applied to all skin types without risk. This makes it uniquely valuable as both a standalone treatment for skin maintenance and as a post-procedure enhancement that accelerates recovery from virtually every other aesthetic treatment.
LED at Aesthetics Medispa: LED therapy is offered as a standalone treatment and as a post-treatment add-on. It is particularly recommended following microneedling, chemical peels and RF treatments to accelerate healing and amplify the biological response initiated by the primary treatment.
Treatments that work. Results you can see.
Every treatment at Aesthetics Medispa begins with a thorough consultation, understanding your skin, your health and your goals before anything is recommended.