Q-Switched Laser

Overview

Q-switched laser delivers high peak energy in nanosecond (10 to the negative 9) pulses to shatter pigment particles. Available in various mediums including Nd:YAG, alexandrite, and ruby, each producing different wavelengths for targeting different types and depths of pigmentation. It remains the gold standard for many pigmented lesions and tattoo removal.

Mechanism

The Q-switch mechanism stores energy in the laser cavity and releases it in extremely short nanosecond bursts, generating peak power thousands of times higher than continuous wave lasers. This ultra-short, high-energy pulse causes selective photothermolysis of melanin: rapid thermal expansion and mechanical fragmentation of pigment particles without significant heating of surrounding tissue. The fragmented particles are then cleared by macrophages.

Effects

Selective destruction of pigmented lesions, tattoo ink fragmentation and removal, treatment of benign pigmented spots, nevus of Ota and Ito treatment, and precise targeting of specific pigment depths based on wavelength selection.

Duration

1-10 sessions depending on condition; intervals of 4-8 weeks for pigmented lesions, 6-8 weeks for tattoo removal

Recovery

Treated spots darken, form thin crusts, and naturally flake off over 7-14 days. Mild swelling for 1-2 days. Wound care with ointment recommended. Strict sun avoidance for 4+ weeks. No picking or scrubbing treated areas.

Side Effects

Temporary darkening, crusting, and scabbing of treated areas. Post-inflammatory hyperpigmentation or hypopigmentation possible. Risk of scarring if crusts are prematurely removed. Incomplete removal may require additional sessions.

Price Range

50,000-200,000 KRW per session

Target Audience

Those with benign pigmented lesions (freckles, sunspots, cafe-au-lait spots), tattoos requiring removal, nevus of Ota, and those seeking targeted pigment destruction.

Devices (7)