Alexandrite Lasers are commonly used for laser hair removal and to treat areas of hyper-pigmentation on the skin (eg. melasma). Except for the treatment of hyper-pigmentation problems associated with acne scarring, Alexandrite Lasers are rarely used to treat active acne or acne scars.
Alexandrite Lasers make use of the gemstone Alexandrite as the lasing medium. Alexandrite is a unique gemstone in that it changes color depending on the type of light that is illuminating it.
Alexandrite Lasers produce light with a wavelength of approximately 755 nm (Red/Infrared). Melanin, the primary pigment in skin and hair, absorbs energy strongly at this wavelength. As a result, the energy from Alexandrite Lasers is strongly absorbed by areas of tissue with high concentrations of melanin, such as the hair bulb and hyper-pigmented areas of skin. The absorption of the laser beam by the melanin damages the melanin-containing cells. This process is the basis of laser hair removal, which can damage the hair producing cells near the base of the hair shaft, and prevents future hair growth.
There is very little clinical research on the effectiveness of Alexandrite lasers in the treatment of active acne or acne scars. At the current time, Alexandrite Lasers are not considered to be an effective treatment for acne or most acne scarring.
Alexandrite Laser treatments are offered at many dermatology offices, cosmetic surgery clinics and laser hair removal clinics.
Popular Alexandrite Laser Systems
Accolade, Apogee, DEKA MOTUS AX, Epilare, GentleLase, Noblex, Songic.
Laser Treatment of Pigmented Lesions. Goldberg. 1997.
Combined Ultrapulse CO2 Laser and Q-Switched Alexandrite Laser Compared with Q-Switched Alexandrite Laser Alone for Refractory Melasma: Split-Face Design. Angsuwarangsee, et al. 2003.
Minocycline-Induced Hyperpigmentation Treated with a 755-nm Q-Switched Alexandrite Laser. Alster, et al. 2004.
A Retrospective Study on the Efficacy and Complications of Q-Switched Alexandrite Laser in the Treatment of Acquired Bilateral Nevus of Ota-Like Macules. Ying-Ming, et al. 2001.