Photodynamic Therapy (PDT) is a skin treatment based on medical theory. The PDT treatment also kills the bacteria that can contribute to the development of acne lesions.and helping the skin shed dead cells more effectively, It accelerates cell growth, improves collagen and elastin generation, promotes micro-blood-circulation and improves the overall skin condition.PDT can help unclog pores which leads to a decrease in blackheads, whiteheads, acne bumps, and pimples on the skin,decrease the frequency of acne breakouts, . It utilizes an LED light source in combination with a photosensitive cosmetic or medicine to treat various of skin problems such as acne, rosacea, redness, papules, bumps, pustule,used for skincare purposes.