PDT is what we call photodynamic therapy. Using LED light to emit photon energy, PDT can accelerate the growth of cells and improve the generation of collagen and elastin. Combined with photosensitive medicine, PDT can safely treat various kinds of skin problems, mainly covering the following aspects.
1. Eliminating pathogenic microorganisms: acne is the result of propionibacterium infection in the skin. Propionibacterium itself can generate endogenous porphyrin that consists mostly of protoporphyrin IX. With exogenous porphyrins (photosensiter) applied, under light of certain wavelength, strong photochemical reactions can occur, thus destroying acne causing propionibacterium directly and effectively.
2. Inhibiting the secretion of sebum enduringly: photosensiter can selectively gather around pilosebaceous units. When light is applied, photochemical reactions occur, causing reversible damage to the sebaceous glands. In this way, PDT therapy can reduce sebum secretion without damaging healthy tissue.
3. Repairing scar: using narrow-spectrum red, blue, green genomic biology light source, PDT can effectively function at the level of subcutaneous tissue, the mitochondria of which absorb the energy of the PDT. Effective photochemical reactions （enzymatic reaction） then occur in these mitochondria, which regulates the functions of skin glands and stimulates skin repair.