To avoid damage to the epidermis, some lasers use cold gel, contact cooling, dynamic cooling spray, or cold blown air. Longer wavelength lasers, especially infrared, will cause less epidermal damage.
Intense pulsed light is most effective against superficial telangiectasias 0.2–0.3 mm in size in patients with Fitzpatrick skin types I to III, but the procedure is very technique sensitive and is dependent on the thickness and temperature of the gel, Dr. Weiss said.
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