Updated on May 8, 2026
Laser tattoo removal works by firing brief, high energy pulses into the pigment, breaking the ink into tiny particles your body can gradually clear between sessions. That is why results build over time. The tattoo is not lifted out of the skin. It is fractured, then removed bit by bit through your body’s own processes.
Why it works on ink yet spares skin
Laser light is matched to the way tattoo pigment absorbs energy. This is known as selective photothermolysis. It means the ink takes up most of the energy while the surrounding skin takes up less. Q switched systems release ultra short pulses that create a strong photoacoustic effect, so the particles crack quickly before excess heat spreads into nearby tissue. For the deeper science, see this clinical overview in JAMA Dermatology and a core explainer on selective photothermolysis.01. What a treatment session actually looks like
- Assessment: colour mapping, a rough read on depth, skin type, medications and photo records.
- Preparation: the area is cleansed, shaved if needed, goggles go on and cooling is set up. A small patch test may be used if the settings are new.
- First pass: rapid pulses move across the tattoo. You will usually see temporary whitening, often called frosting, which settles within minutes.
- Immediate care: cooling, a light dressing if needed and simple aftercare advice before you leave.
Which wavelengths target which colours
Q switched Nd:YAG is still the mainstay in most clinics. Black ink absorbs across a broad range of light, so it usually responds best. Reds and oranges tend to react well to green light. Blues and greens can be more stubborn and may need extra wavelengths or more sessions. Pale yellows and whites are often harder to shift, as noted by WebMD.| Wavelength | Ink colours | Clinical notes |
|---|---|---|
| 1064 nm Nd:YAG | Black, dark blue, dark brown | Deep penetration with low melanin absorption, suitable for a wide range of skin tones. |
| 532 nm KTP | Red, orange, some yellow | Used carefully on lighter skin types due to higher skin absorption. |
| Optional additions | Green, light blue | Some systems add 694 nm or 755 nm to chase specific resistant hues. |
What happens between sessions
Once the pigment has been broken apart, immune cells begin clearing the smaller fragments through the lymphatic system. That stage is biological, so it takes time. Clinics often leave six to ten weeks between sessions, sometimes longer for darker skin types or densely inked pieces. Fading usually starts in the lighter shading first, then moves into outlines and heavier fill.02. Sensation, side effects, and aftercare
- How it feels: most clients describe sharp snaps that last milliseconds. Strong air cooling and contact gel can make a real difference to comfort.
- Immediately after: frosting may last a few minutes, followed by redness and mild swelling for a day or two.
- Risks: with trained operators and sensible cooling, serious complications are uncommon. See NHS guidance on scarring risk and pigment change.
- Aftercare: keep the area clean and dry, stay out of heat and sun, use a simple emollient and leave any blisters or scabs alone.
Recommended device for professional clinics
For wide colour coverage and dependable energy delivery, a Q switched Nd:YAG with both 1064 nm and 532 nm is usually the sensible option. The Nu Tatouage Plus delivers up to 1500 mJ with dual shot counters and flexible control through either a footswitch or handpiece. Running costs stay low, which helps clinics keep treatment pricing competitive, while quick pulse delivery can reduce chair time without sacrificing standards.- Performance: stable beam quality, dependable energy from one session to the next and durable parts that hold their calibration well.
- Comfort: pairing it with a dedicated cooling unit can improve tolerance and help operators maintain efficient settings. See Cryo 6.
- Compliance: free training and certification are included. If you need governance support, our Laser Protection Advisor service can help with UK requirements.
03. Setting expectations that stick
- How many sessions: small, shallow amateur tattoos may clear in fewer appointments. Dense, layered professional work usually takes longer.
- Skin type and site: areas with better blood flow often clear more quickly. Darker skin types usually benefit from more cautious settings and longer spacing.
- Colour mix: black and red often respond well. Pastel shades may fade but not disappear completely.
Smooth setup and support for clinics
Every machine includes free training and certification that is suitable for insurance. You also get fast UK support. If a unit cannot be repaired on site, a replacement can be sent quickly so your clinic diary takes less of a hit. Want a closer look? Book a demo in Coventry or virtually, or request details for finance and ROI packs.Key takeaways
- Why it fades: the laser targets pigment, breaks it into smaller fragments and your body clears it over the following weeks.
- What influences results: colour, density, skin type, placement and the gap between sessions all matter.
- The practical kit: Q switched Nd:YAG at 1064 and 532 covers most ink colours with dependable safety in clinic use.
