- The Q-switched Nd:YAG laser emits 2 wavelengths at 532 and 1064nm.
- These wavelengths are preferentially absorbed by dark pigment. When the light beam reaches its target, the pigment undergoes a sort of micro explosion. The microscopic debris is then cleared away by macrophages, the skin’s natural scavengers.
- Brown age spots
- Dark freckles on the face, lip or body
- Birth marks such as nevus of Ota and Becker’s nevus
- Artistic tattoos, especially the black and brown colors
- Accidental tattoos with lead, gravel etc.
- Some skin discolorations due to drugs
- The skin is cleansed and appropriate eye protection is provided
- The beam is then aimed at the pigmented lesion in a pulsed mode.
- Individual lesions do not require local anesthesia.
- Large areas may require prior application of a numbing cream.
- Each pulse feels like the snapping of a rubber band.
- There is an immediate darkening of the lesion following treatment. This is followed by formation of a thin scab which falls off within 1 week for the face, 2 weeks off the face.