IPL (Intense Pulse Light) is a skin rejuvenation technique that improves the appearance of photoaged skin: removes age spots, sun-induced freckles, most benign pigments and redness caused by broken capillaries or rosacea. It also smoothes skin texture, stimulates collagen production, reduces pore size, and slightly softens fine lines. In addition, it improves acne by decreasing the size of sebaceous glands and the bacteria that causes acne. It also lightens the redness seen with acne scarring. You may have redness or swelling for a few hours after the procedure. Brown spots will get darker and then slough off on their own.