LED Light Therapy: The Science Behind One of Our Most Recommended Skin Treatments

At Mind Body Skin Institute, LED light therapy is one of the most commonly incorporated treatments within our skin and laser programs. While it may appear simple, the science behind LED therapy is extensive, with growing evidence supporting its role in inflammation reduction, wound healing, collagen stimulation, acne management, and skin recovery.

Unlike more aggressive treatments that rely on controlled injury, LED (light-emitting diode) therapy works by delivering specific wavelengths of light to the skin to stimulate cellular activity and support healthier skin function.

It is painless, non-invasive, requires no downtime, and can safely complement many other skin treatments.

What Is LED Light Therapy?

LED therapy uses specific wavelengths of visible and near-infrared light to influence cellular behaviour within the skin.

Different wavelengths penetrate to different depths and interact with skin cells in unique ways.

The most commonly used wavelengths include:
• Blue light (~415 nm)
• Red light (~633 nm)
• Near-infrared light (~830 nm)

These wavelengths are absorbed by structures within cells called chromophores, particularly within mitochondria, the “energy-producing” component of cells.

This process is known as photobiomodulation.

The Science of Photobiomodulation

Photobiomodulation refers to the ability of light to influence biological processes at a cellular level.

Research suggests LED therapy may:
• Increase cellular ATP (energy) production
• Reduce oxidative stress
• Modulate inflammatory pathways
• Improve circulation
• Stimulate fibroblast activity
• Support collagen and elastin production
• Accelerate tissue repair

The primary target is believed to be cytochrome c oxidase within mitochondria.

Different LED Colours and Their Uses

Blue Light Therapy

Blue light primarily targets acne-causing bacteria, particularly Cutibacterium acnes.

Potential benefits include:
• Reduced inflammatory acne
• Reduced oiliness
• Fewer active breakouts
• Adjunctive acne management

Red Light Therapy

Red light penetrates deeper into the skin and is associated with:
• Reduced inflammation
• Improved wound healing
• Fibroblast stimulation
• Collagen support
• Recovery after procedures

Near-Infrared Light

Near-infrared wavelengths penetrate even deeper and are often used to support:
• Healing
• Recovery
• Inflammation reduction
• Tissue repair

Why We Add LED to Many Skin Treatments

At Mind Body Skin Institute, we frequently combine LED therapy with other procedures because it may help:
• Reduce post-procedure inflammation
• Improve patient comfort
• Support healing
• Reduce downtime
• Enhance skin recovery
• Optimise overall treatment outcomes

LED is particularly useful after treatments that intentionally create controlled inflammation, such as:
• Microneedling
• Fractional laser
• IPL and vascular laser
• Chemical peels
• Acne treatments

Research into LED therapy continues to evolve, but studies suggest potential benefits in:
• Acne
• Rosacea
• Skin redness
• Wound healing
• Post-procedure recovery
• Fine lines and photoageing
• Inflammatory skin conditions
• Skin barrier support

Contraindications and Precautions

Although LED therapy is generally considered very safe, it is not appropriate for everyone.

Potential contraindications or precautions may include:
• Photosensitive disorders
• Certain medications causing photosensitivity
• Active skin infections in some cases
• Epilepsy triggered by flashing lights
• Certain autoimmune or light-sensitive conditions
• Recent use of photosensitising medications
• Pregnancy (depending on device and indication)

At Mind Body Skin Institute, we frequently incorporate LED into treatment plans because it may help support healthier skin function, improve recovery, and complement other skin procedures.

As with any treatment, suitability varies between individuals, and professional assessment is important.