CO2and Erbium Lasers

The CO2 and erbium lasers are sources that emit infrared (IR) light at a wavelength of 10,600 nm and 2940 nm, respectively. These wavelengths are well absorbed by water. The lasers destroy the superficial skin layers nonselectively and can be used to remove superficial epidermal pigment, especially seborrheic keratoses. Superficial erbium laser epidermal abrasion of a "Q-switched laser-resistant" cafe-au-lait macule has also been reported. Theses ablative lasers can also be helpful in treating resistant tattoos by removing the epidermis immediately before Q-switched laser treatment. This will lead to facilitated transepi-dermal tattoo particle elimination.

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