Laser Tattoo Removal (Lumenis PiQo4)

Laser tattoo removal using the Lumenis PiQo4 — a dual-wavelength picosecond and nanosecond laser combining 1064 nm Nd:YAG and 532 nm KTP to shatter tattoo ink particles across a broad spectrum of colors. The PiQo4's large spot size and high peak power reduce the number of sessions needed. Sessions spaced six to eight weeks apart allow the immune system to clear ink fragments between treatments. Mild blistering and redness are the expected post-treatment response.

Tattoo removal at Lemmon Avenue Plastic Surgery uses the Lumenis PiQo4 — a multi-mode laser platform combining picosecond and nanosecond pulse widths at two wavelengths (1064 nm Nd:YAG and 532 nm frequency-doubled KTP) for broad-spectrum tattoo ink fragmentation. The physics of laser tattoo removal rest on the principle of selective photothermolysis applied to tattoo ink particles: laser pulses of sufficient power and brevity are absorbed by the ink particles, causing rapid explosive expansion and contraction (photoacoustic effect) that shatters the ink into submicron fragments small enough for macrophages to phagocytose and remove through the lymphatic system. The choice of wavelength determines which ink colors can be targeted — 1064 nm is absorbed most effectively by dark blue, black, and green inks; 532 nm by red, orange, and yellow inks. The PiQo4's picosecond mode (pulse widths in the trillionth-of-a-second range) creates a primarily photoacoustic shattering effect with minimal thermal spread to surrounding tissue, offering effective ink fragmentation with a lower risk of scarring or skin texture changes compared to nanosecond-only devices. The nanosecond mode provides additional energy delivery for dense or deeply set inks that require greater photon flux. The PiQo4 features an unusually large maximum spot size compared to competing picosecond systems, which increases the effective treatment area per pulse, reduces the total number of pulses required per session, and improves consistency of energy delivery across the tattoo. Sessions are spaced six to eight weeks apart to allow the immune system time to clear ink debris before the next session — treating too frequently can overwhelm the lymphatic clearance capacity and reduce cumulative efficiency. The number of sessions required depends on the tattoo's age, ink density, color composition, professional versus amateur application, skin type, and location on the body. Professional multicolor tattoos typically require six to twelve sessions; amateur single-color tattoos may clear in three to six.