The Erbium (Er) yag laser is a kind of solid laser with a wavelength of 2940nm. It is in the infrared area which is invisible. It has peak value of absorption to water. The cutaneous absorption of the Er:YAG laser energy by water is 10-fold more efficient than that of the carbon dioxide laser, allowing for more superficial tissue ablation and finer control. Pulsed laser energy causes controlled vaporization of the skin according to the principles of selective photothermolysis. The clinical manifestations of laser treatment depend on the ability of the skin to resurface itself. After lasing, the vaporized, atypical, disorganized epidermal cells are replaced with normal, well-organized keratinocytes from the follicular adnexa. The irregular, disorganized collagen and elastin of the upper papillary dermis are replaced with normal, compact collagen and elastin organized in parallel configurations.
Application1- Skin resurfacing
2- Surgical scar removal (more aggressive level)
3- Photo damage
4- Stretch marks removal
5- Melasma (dark skin patches)
6- Wrinkles and fine lines
7- Wart and nevus removal
8- Texture irregularity
