The IPL effectively treats rosacea, telangiectasis or spider angiomas (single dilated blood vessels), port wine stains (tend to darken and thicken as the person ages), hemangiomas (grow rapidly after birth, but usually disappear with time), sun damaged skin, spider veins, and stretch marks that are red in coloration. The pulsed dye laser is a device that produces a bright light that is absorbed by abnormal blood vessels, which are destroyed without damaging the surrounding skin.