The alexandrite laser is a type of laser that uses a 755nm +1064nm wavelength of light to target specific pigments in the skin. This makes it effective for treating various skin concerns, including pigmentation issues like brown spots and birthmarks, as well as for hair removal. The laser works by delivering focused light energy that is absorbed by the targeted pigment, causing it to heat up and break down.

• Selective photothermal effect: The laser energy is absorbed by specific pigments (such as melanin) or hemoglobin in the skin and converted into heat energy, thereby destroying the target tissue.
• Stimulating collagen proliferation: Long pulse lasers can penetrate deep into the dermis, stimulate fibroblast proliferation, and promote collagen production, thereby improving the elasticity and firmness of the skin.
• Thermal effect: By controlling the pulse width and energy of the laser, the target tissue can be precisely heated to reduce damage to surrounding healthy tissues.