Nd: YAG laser and Argon lasers are most commonly used in surgery that is less-invasive than traditional methods. The effect that a laser has on a tissue sample depends on the properties of the tissue, water content, conductivity, density, ability to scatter, absorb and reflect the emitted energy.    Nd: YAG lasers produce a largely scattering effect on tissue because there are no tissue chromophores that absorb light at the 1064 nm wavelength. Tissue penetration of the laser is therefore low. Reflected light leads to a beam that is not cohesive and narrow. Tissue heats up slowly, making the YAG laser ideal for tumor necrosis, hemostasis and several endoscopic procedures such as laparoscopy.  In the aesthetic industry, these lasers are preferred because they gently penetrate skin for the purpose of vaporising scar tissue, stimulating new collagen production, sealing overactive sebaceous glands, and offering benefits of skin tone and texture.