The principle behind this technique is photobiomodulation: the use of LED-emitted light to stimulate dermal cell metabolism. This process reactivates the production of fibroblasts, which are responsible for synthesizing collagen and elastin. These essential molecules help the skin regain its firmness, elasticity, and density.
Medical LEDs also enhance wound healing, reduce excessive sebum production, and eliminate acne-causing bacteria. The effects vary depending on the light color emitted :
- Red Light : Stimulates tissue vascularization, boosts fibroblast synthesis, tightens skin pores, and reduces dilated blood vessels, such as those seen in rosacea and couperose.
- Yellow Light : Offers anti-inflammatory properties, improves lymphatic drainage, and reduces fine lines.
- Blue Light : Has antibacterial effects, regulates sebum production, purifies the skin, and promotes healing.
- Green Light : Targets pigmented spots by breaking down melanin.