The clinical approach
The physics here rest on selective photothermolysis, the framework Anderson and Parrish laid out in 1983. Pick a wavelength the target absorbs strongly, deliver it in a pulse short enough that heat can't spread to the tissue around it, and you confine the damage to the pigment. Our device manuals lean on the same principle that our engineering archive has used across Q-switched platforms for years.
Tattoo work pushes this further into what our archive calls a photomechanical effect. When a very high-power beam hits an absorbing target for only nanoseconds, the ink granule heats and shatters almost instantly, closer to a tiny controlled blast than a slow burn. The fragments are then small enough for the body to carry off over the following weeks. That's why clearance is gradual and why you can't rush it.
Color is what dictates wavelength. Dark inks, black and blue-black most of all, absorb 1064nm well and sit deep, so that's the workhorse for the bulk of the piece. Red and warmer shallow pigments respond to 532nm instead. Depth matters too: the 600 to 1200nm range is the skin's optical window, scattering less and reaching lower layers, which is part of why 1064nm handles deeper ink. Green and teal are stubborn and often need more sessions than a client expects.
Treatment protocol
Plan for a course, never a single visit. Professional tattoos commonly run six to twelve sessions, amateur ones fewer, and you'll want roughly six to eight weeks between them. That gap isn't padding. It's the time the immune system needs to clear the shattered pigment and let the skin settle before you go again. Push the sessions closer together and you raise the risk without speeding the result.
Right after treatment expect frosting, some swelling, and often a blister or two. Keep the area clean, dressed, and out of the sun, and tell clients plainly not to pick at it. Scabbing that gets disturbed is where scarring starts. Between sessions, sun protection on the site is non-negotiable.
Set expectations before the first pass. Ink density, how deep it was placed, the colors involved, and whether it was professional or amateur all move the timeline, and a few colors may never fully vanish. Darker skin types need extra care, since surrounding melanin competes for the same light and the margin for pigment change is narrower. Test spots and conservative settings are sensible on those patients. This is professional equipment, and results ride on the operator matching wavelength, fluence, and pulse to the tattoo in front of them.
Recommended equipment
Two Pmise platforms cover tattoo work directly. The QE-01 EO Q-Switched Nd:YAG uses electro-optic Q-switching for a tight, high-peak-power nanosecond pulse, which is what you want for driving that photomechanical fragmentation cleanly through dense, professional ink. Its dual 1064nm and 532nm output lets one device handle both the dark bulk of a piece and the red or shallow pigments.
For clinics after a dependable everyday tattoo and pigment device, the QN-03 Q-Switched Nd:YAG delivers the same 1064nm and 532nm wavelength pairing in a more streamlined package. Both draw on our engineering archive's long run of Q-switched Nd:YAG designs. Check each product page for the full specification table before you spec a room.
Frequently asked questions
How many sessions does tattoo removal take?
It varies with the tattoo. Amateur work often clears in a handful of sessions, while a saturated professional piece can need six to twelve or more. Color, ink depth, and density all factor in. Green and some other pigments are slow to respond. Give clients a realistic range up front rather than a single number, and reassess as the tattoo fades over the course.
Why the wait between sessions?
Once the laser shatters the ink, your body has to carry the fragments away, and that clearance takes time. Six to eight weeks lets the immune system do that work and lets the skin recover before the next pass. Treating too soon doesn't speed removal, it just stacks trauma on skin that hasn't healed and raises the chance of scarring or pigment change.
Can every tattoo be fully removed?
Not always, and it's fair to say so. Dark inks respond best. Certain colors, some greens and cosmetic pigments especially, may lighten a great deal without disappearing completely. Depth and density matter too. Many clients are aiming for a cover-up rather than a blank slate, and substantial fading is usually enough for that.
Is tattoo removal safe on darker skin?
It can be, with care. Melanin in the surrounding skin competes for the same light, so there's more risk of temporary lightening or darkening. A trained operator will use conservative settings, favor 1064nm for its deeper reach, and often run a test spot first. This is professional equipment, and outcomes on darker skin depend a lot on that operator judgement.