Why tattoo colour matters for laser removal
The picosecond laser removes a tattoo by shattering ink particles with short pulses of light. But for that to work, the pigment has to absorb the light. Different colours absorb different wavelengths — and that's where coloured tattoos get complicated.
Black pigment absorbs virtually the full spectrum, so it responds to any laser wavelength. Colours like green, blue or yellow absorb only narrow bands of the spectrum, which means a standard laser can miss them rather than break them down. Removing these colours requires different wavelengths or specialised settings.
For a full explanation of the physics of the process, see the guide on how laser tattoo removal works.
Black and dark — the easiest case
Black ink is the technical optimum for laser removal. It absorbs a wide spectrum of light, responds to standard wavelengths (1064 nm) and clears in a relatively predictable way. Dark blue and dark grey are similar.
An entirely black-and-grey tattoo is the best candidate for full removal in a realistic number of sessions. That doesn't mean it's "easy" in a casual sense — 8–12 sessions is still several months of work — but compared with coloured tattoos the results are far more predictable.
Which colours are hardest to remove
From hardest to somewhat easier (but still demanding):
- Green and teal — absorb mainly red and near-infrared wavelengths, which are less available on standard lasers. Require a specific wavelength (e.g. 532 nm or 694 nm) and typically more sessions.
- Light blue — similar problem to green, though it responds slightly better to certain lasers.
- Yellow and light orange — absorb standard wavelengths very poorly. Often exceptionally resistant to treatment.
- White and flesh tones — contain titanium dioxide, which can paradoxically darken under the laser. A test spot is mandatory before full treatment, and the outcome can be unpredictable.
- Red — responds better than green or yellow (absorbs 532 nm well), but with iron-oxide pigments it can darken in early sessions.
Light colours, flesh tones and whites often need the most cautious approach — not only because they're hard to remove, but because the reaction can be surprising.
How the picosecond laser handles coloured pigments
The picosecond laser outperforms older Q-switch lasers on colours because it delivers energy in exceptionally short bursts — picoseconds. This means it shatters pigment particles mechanically (photoacoustically) rather than purely thermally. The result: less damage to surrounding tissue and better outcomes for difficult colours.
Even so, coloured tattoos may need multiple wavelengths — different colours respond to different light ranges. For multicolour tattoos the removal plan often differs for individual sections of the image.
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How many sessions for a coloured tattoo
For a tattoo with difficult colours (green, blue, yellow) plan realistically for 8–12 sessions or more, spaced about 8 weeks apart. That's the indicative range — the exact count depends on the specific pigments, ink layer thickness and the skin's response.
Not every coloured tattoo will clear to zero. In some cases — particularly with yellow and white pigments — significant fading is possible but complete elimination may not be. We're upfront about that at the consultation, after looking at the tattoo. For more on realistic outcomes, see the guide on how many sessions tattoo removal takes.
If you have a coloured tattoo and want to know what to expect, book a free consultation — we'll look at it in person and give you an honest plan.