Short answer: Coloured ink usually needs more sessions than black. Clinics commonly quote five to ten sessions on a picosecond laser tattoo removal machine, with greens and yellows at the top of that range. Ink colour, depth, age and Fitzpatrick skin type all shift the number.
Nobody wants a straight number. People want to know whether their tattoo is a four-session job or a twelve-session job. So let’s take the colour question seriously — a stubborn green and a fading red behave differently for reasons that have nothing to do with marketing.
Here is what a picosecond laser tattoo removal machine does to coloured pigment, which wavelength handles which colour, and what decides the number of visits.
Why Coloured Ink Behaves Differently on a Picosecond Laser Tattoo Removal Machine
Ink removal depends on absorption. A pigment only fragments when the wavelength hitting it is absorbed strongly enough to break it apart. Black pigment absorbs across a wide band, which is why black tattoos respond to almost any common wavelength. Colours are pickier — each one has its own absorption curve.
Picosecond pulses break pigment with pressure rather than heat. The pulse lasts trillionths of a second, short enough to shatter pigment into dust-like particles before much heat builds in the skin. The body’s own waste-disposal processes then clear those fragments over the following weeks. On a picosecond laser tattoo removal machine, that clearance gap matters as much as the session itself.
Matching Wavelength to Ink Colour
Wavelength choice is a match, not a preference. On the platform PERFECTLASER supplies, the offer is four wavelengths across three treatment heads: 532nm and 1064nm on one head, 755nm on another, and 1320nm on the third.
| Ink or concern | Wavelength that fits | What clinics generally see |
|---|---|---|
| Black, dark blue, grey | 1064nm | Fastest group by a wide margin |
| Red, orange, warm brown | 532nm | Usually the most responsive colour, often ahead of blue and green |
| Green, teal, light blue | 755nm, with 1064nm also tested | Slower and often partial; cover-up layers underneath slow it further |
| Yellow, pale green | No strong match | Hardest group. Plan a longer course or accept partial clearance |
| Pigment, pores, dull tone | 755nm and 1320nm | Where the other two heads sit — skincare, not tattoo work |
The manufacturer’s labelling is blunt about the split. The 1064nm / 532nm head is labelled for dark-colour tattoo and pigmentation removal; the 755nm head for breaking melanin and whitening; the 1320nm head for skin rejuvenation, pore shrinking and whitening. So this is a three-head, multi-application platform. We will not call it a tattoo-only box.
Nanosecond and Picosecond Work in Different Ways
Older Q-switched systems fire nanosecond pulses and lean on heat: pigment absorbs energy and breaks up largely through thermal stress. Picosecond pulses are about a thousand times shorter and lean on pressure. PERFECTLASER publishes 450PS as the pulse width, stated on the unit’s own product artwork. Neither approach is a magic wand — both need a matched wavelength and correct technique, and the biggest variable in the room is the person holding the handpiece.
What Moves Your Session Count
- Ink colour and layering. A single-colour line drawing is a different job from a five-colour piece, and a cover-up hides two ink sets in one area.
- Age. Older ink has already been partly broken down by the immune system, so it often shifts faster than fresh work.
- Depth and site. Ink sits at different depths depending on the artist, and blood flow at that site affects clearance.
- Skin tone. Fitzpatrick IV to VI often needs lower energy per pass and more visits, and carries more pigment-change risk. That is a clinic conversation, not a product-page one.
- Aftercare. Sun exposure and picked blisters set the clock back.
The Manufacturer’s Claim, and the Honest Caveat
The maker states that picosecond treatment shortens a course from 5 to 10 sessions down to 2 to 4. Read that as a manufacturer claim, not an average to hold anyone to. The same PERFECTLASER artwork claims honeycomb focusing, no pigment precipitate, and a low thermal load with fast repair between sessions. Any clinic that tells you exactly how many sessions a coloured tattoo will need on a picosecond laser tattoo removal machine before seeing it is guessing. What a good clinic does instead is treat twice, photograph the result under the same light, then revise the estimate.
Spacing, Aftercare and the Repair Window
Six to eight weeks between sessions is common practice, general guidance rather than a fixed rule. The gap exists so the body can move the fragments out; treating sooner stacks irritation instead of progress. Between visits, keep the area clean and dry, don’t pick or scrub blisters, keep it out of the sun, and skip pools and saunas until the skin settles. If skin is still angry from the last appointment, wait. Rushing the schedule on a picosecond laser tattoo removal machine is how people end up with pigment changes.
The before-and-after images are manufacturer-supplied examples. Individual results differ, and no image guarantees an outcome for anyone else.
Home Devices and Clinic Platforms Are Different Tools
A home device is not worthless, and a clinic platform is not the only route. They are built for different jobs: home units generally work at low energy over small areas, while a professional multi-wavelength platform is built for clinic turnaround and for ink a low-energy device cannot reach. Which one suits a given tattoo is a decision for the person and a qualified operator — any claim that one replaces the other is a sales line.
If You Run a Clinic
The number you care about is throughput. Coloured work eats more chair time per cleared square centimetre than black work, and cover-ups eat more again. If you are buying for a client base with a lot of colour, run your demo on coloured ink rather than black script, and judge the handpieces on how easily operators switch wavelengths mid-appointment. PERFECTLASER can send the wavelength-fit notes for this three-head platform on request.
The Bottom Line
Coloured ink takes patience. Expect more sessions than black, expect green and yellow to lag, and expect the final count to be settled by pigment chemistry, not a brochure. A picosecond laser tattoo removal machine with several wavelengths gives the operator more ways to match the ink in front of them, which is a real advantage on stubborn colour — provided expectations are set honestly at consultation. Book one session, photograph it properly, and let the second tell you the truth.
FAQ
How many sessions for coloured tattoos?
Clinics commonly quote five to ten sessions for coloured work, and stubborn greens or yellows run longer; black and grey usually clear in fewer. The honest answer comes after two sessions, once the fading rate shows on your own skin and the settings can be adjusted.
Does colour ink need different wavelengths?
Yes, and it is the main reason multi-wavelength platforms exist. Red and orange respond best to 532nm, black and dark blues to 1064nm, and greens generally need 755nm or a combination. Trying one wavelength on every colour is why coloured progress stalls on a picosecond laser tattoo removal machine.
Can picosecond lasers remove coloured tattoos completely?
Many clear well, but complete clearance is not guaranteed for every pigment. Yellow, some greens and heavy cover-ups are the usual partial cases, and ink composition is not standardised between studios, so two lookalike tattoos can respond differently. Agree a realistic goal with your clinic instead of an absolute one.
Does tattoo age change the number of sessions?
Yes. Older ink has usually been partly broken down already, so it often clears faster than fresh work. Depth, artist technique and body site matter too. A twenty-year-old shoulder piece on a picosecond laser tattoo removal machine may take fewer visits than a two-year-old calf piece carrying more ink.
Are at-home devices enough?
For a small, recently applied tattoo, some home devices are marketed for lightening and may suit a narrow area. For dense colour, larger pieces or cover-ups, a professional platform with several wavelengths and higher adjustable energy is the category built for that work. The two are not equivalent, and which one fits is a clinical judgment rather than a spec sheet comparison.
If you are buying rather than being treated, ask for the wavelength-fit material before you compare quotes. The multi-wavelength picosecond laser tattoo removal machine configuration is available through our contact page, and the full range from PERFECTLASER is worth reading alongside it. Tell us what your clients actually bring in — cover-ups, colour sleeves, mostly black script — and we will answer with the heads and wavelengths that match that work instead of a generic sheet.