1) Acute stage:
Photodynamic microthermal injury –>20~30% skin contraction
2) Late stage (within 1 Month)
Healing process by new formation of collagen column at injured site
- increase elasticity and making skin look younger (wrinkles disappear)
- in avoiding burn to skin, we must apply multi-stepped treatment course
- if doctor tries 2~3 times to retouch, 70~80% area of aged skins will be replaced by young tissue.