LED Therapy — The Science Explained

Low-level light therapy (LLLT), more commonly known as LED therapy, uses specific wavelengths of light to penetrate the skin at different depths and trigger cellular responses. It is non-invasive, painless, and backed by a substantial body of peer-reviewed research.

How Light Affects the Skin

Chromophores — light-absorbing molecules within the cells — respond to specific wavelengths and initiate biological processes. This is called photobiomodulation. Different wavelengths activate different chromophores, which is why red, near-infrared, blue, and yellow light each have distinct clinical applications.

Wavelengths and Their Effects

• Red (630–700nm): stimulates fibroblasts to produce collagen and elastin. Reduces redness and inflammation. Ideal for anti-ageing and rosacea.
• Near-infrared (800–1000nm): penetrates deeper into the dermis and subcutaneous tissue. Accelerates healing, reduces pain, improves circulation.
• Blue (415nm): generates reactive oxygen species that destroy the P. acnes bacteria responsible for inflammatory acne. Requires careful patient selection.
• Yellow (590nm): addresses vascular concerns, reduces erythema, targets haemoglobin in superficial capillaries.

“LED therapy is one of the few aesthetic treatments where the science genuinely precedes the marketing. The photobiomodulation research is extensive and compelling.”

— Dr. Eleanor Voss, Medical Director

What to Expect from a Course of Treatment

A single LED session typically produces a noticeable glow and a slight reduction in redness immediately afterward. Structural improvements — increased collagen density, improved skin firmness, reduction in acne lesions — become visible after 6–8 sessions spaced one week apart. Most clients opt for a monthly maintenance session following the initial course.