Q-Switches ND-YAG (neodymium-doped Yttrium aluminium garnet) Laser can be visible to the human eye.Q-Switched ND-YAG Laser is the best laser which helps to remove grey,black and dark blue inks.It also helps to remove the red,yellow,& orange colors.This laser contains potassium titanyl phosphate crystal.With the help of these crystal it double the frequency of laser light.It has a wave length of 1064 nm and capability to reach deeper layers of skin tissues,which other lasers can not done. Lasers are the most commonly used for tattoo removal.Laser works by produce short pulses of intense light which pass harmlessly by top layer of the skin and then this is absorbed by tattoo pigment.Lasers directly injecting into the skin in just trillionths of a second.Laser helps the tattoo pigment to fragment into very small particles which later removed by the immune system of the body.