Blue light therapy is a light-based treatment for illnesses that affect the skin or immediately beneath it. It is thought to be a painless process. When blue light therapy is combined with a high-intensity light source to activate medications that are photosynthesizing, also known as light-sensitive, it becomes photodynamic therapy. It is thought of as an alternate form of treatment, and the light employed is a natural violet or blue light. Only regions that the light can reach can be treated using blue light therapy. Therefore, conditions that are either on the skin's surface or slightly beneath it are usually treated with it. Other kinds of skin conditions can also be treated using blue light therapy. It can be used to lessen swollen oil glands, or sebaceous hypertrophy, and to improve the appearance of the skin. Sun spots, acne, and even acne-related scars can be eliminated with its assistance. In Alleys Aesthetics, this treatment is one of the most popular options for treating acne, and it has helped a lot of patients with moderate to severe acne.