... Tighten skin,improve elasticity and tone of skin; Alleviate PDT System(LED Light Aesthetics Device)Performance:Anti-aging,reduce fine lines wrinkles ... photo-dynamic is driven by near-infrared, ultraviolet, or visible light. This new technology is systemic administration of a photosensitiser, which ... radicals selectively destroy the tumor cells having strong mitotic activities. PDT Skin care machine