There are two main types of lasers used for skin rejuvenation:
1 - Ablative lasers
They remove the top layer of skin (epidermis) and stimulate the production of new collagen in the underlying dermis.
Examples:
Laser CO₂ laser.
Erbium:YAG laser
They are more effective, but require a longer recovery time (1-2 weeks).
2 - Non-ablative lasers
They penetrate into the deep layers of the skin without damaging the surface and stimulate collagen production.
Examples: