Colour tattoos vs black and grey — does it matter for removal?

Why colour matters so much in laser removal

Laser tattoo removal works by targeting ink particles with specific wavelengths of light. Each wavelength is effective against certain colours and ineffective against others — because ink absorbs or reflects light differently based on its pigment composition. Black ink absorbs all wavelengths, making it the most responsive to a wide range of lasers. Coloured inks are selective absorbers — a blue ink will absorb certain wavelengths but reflect others. This is why colour tattoos require specific laser wavelengths and, often, more sessions.

Black and grey tattoos are the most treatable

Black and grey tattoos are the most straightforward to remove. A standard Nd:YAG or picosecond laser at 1064nm wavelength effectively targets black and grey ink. Most clinics — even those with more basic laser setups — can treat black and grey well. If your tattoo is entirely black and grey, your pool of suitable clinics is relatively wide and you can focus on comparing other factors like price, location, and qualifications.

Which colours are most difficult to remove

Green and blue inks are among the hardest to remove, requiring specific wavelengths (694nm Ruby or 755nm Alexandrite) that not all lasers can produce. Yellow and light inks are particularly challenging and can be almost impossible to fully remove with some laser systems. White ink is unpredictable — it can oxidise (turn dark) when exposed to certain laser wavelengths, making it potentially harder to treat after initial exposure. Before booking at any clinic, ask directly: "Can your laser treat [specific colour] ink?" and ask to see examples of results on similar colours.

Tip: If your tattoo contains green, blue, yellow, or white ink, specifically ask each clinic which wavelengths their laser system uses.

Fading for a cover-up changes the equation

If your goal is to fade the tattoo rather than fully remove it — to prepare for a cover-up design — your requirements are less demanding than full removal. You don't need to clear every last trace of ink; you need enough lightening for a new design to work over the top. This typically means fewer sessions, often 3–5 rather than 8–12, and can make certain clinics more suitable than they would be for full removal. Tell any clinic you consult with if your goal is a cover-up — this changes the treatment plan and the session estimate.