The Pulsed Dye Laser, or PDL uses a concentrated beam of light that targets blood vessels in the skin. The light is converted into heat, destroying the blood vessel while leaving the surrounding skin undamaged. For treatment of many concerns, such as facial telangetsias, facial flushing (known as rosacea), scarring, and background redness, as series of treatments is generally recommend. 3 to 4 treatment sessions are recommended for maximum clearance. These are spaced 4 to 6 weeks apart.For other redness complaints such as cherry angiomas, only one treatment may be needed to complete clear the treatment site.