The Pearl procedure combines the impact of resurfacing lasers with the gentleness and safety of non-invasive procedures to treat aging and sun-damaged skin. Pearl, using YSGG-2790nm wavelength, delivers significant results in 1-2 treatments compared to the 4-6 treatments required with fractional non-ablative devices. YSGG-2790nm is novel wavelength designed to improve patient treatment experience and results.

Water Absorption vs. Wavelength

Mechanism of Action

Comparison of Thermal Characteristics

Er:YAG (2940nm) CO2 (10600nm) YSGG (2790nm)
Er:YAG 2.94µm primarily vaporizes tissue due to its high water absorption. Heat is confined in the epidermis. No hemostasis. CO2 10.6µm, the margin between a safe, repeatable ablation and overheating the dermis is narrow as evidenced with numerous cases of non-transient pigmentation changes. The goal for our YSGG 2.79µm is to ablate and coagulate to a controllable depth of epidermis while depositing some heat into the dermis, promoting new collagen.


Light Source Er:YSGG
Wavelength 2790nm
Fluence 1.5 – 3.5J/cm2
Pulse width 0.3, 0.4, 0.5ms
Spot size 6mm
Scan Size 30ⅹ30 mm
Pulse Width Range Sub-millisecond adjustment
Working Distance 3.2 inches
Repetition rate Single shot to 20Hz
Protective Window Sapphire