Facial telangiectasias have been successfully treated with a variety of laser wavelengths. Shorter wavelengths (532 nm) are preferable in the treating of very small vessels on the face; longer wavelengths 940nm are more effective in the treating of larger and deeper vessels. In medical study, we identified that the 940 nm has the benefits of a longer wavelength in targeting larger caliber and deeper vessels with a safety profile superior to that of shorter wavelength.
Lasers with long wavelengths of light, within the visible spectrum, penetrate more deeply into the skin, making them more suitable for deeper vessels. The 940 nm diode laser was found to have greater efficacy for deeper blood vessels based upon its superior penetration of the dermis with a longer wavelength.
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