Anti-ageing laser treatments work by firing laser light into your skin. These ultrashort pulses fired uniformly into the skin actually stimulate collagen production.
The laser works to treat thread veins by firing short bursts of light of different wavelengths onto the affected area. This light is absorbed by the hemoglobin in the thread veins causing those blood vessels damage.
During your treatment the laser light is targeted at the area of unwanted pigmentation. These pulses actually shatter the melanin in your skin into very minute particles which the body then eliminates using its natural processes.