How the Picosecond Laser Addresses Black Tattoos, Coloured Ink, Pigmentation, and Skin Rejuvenation in a Single System

Tattoo removal and pigmentation treatment are not single-wavelength problems. Different pigment colours absorb different wavelengths of light — and a laser system that can only deliver one wavelength can only treat the colours that wavelength addresses. A multi-wavelength picosecond platform changes that entirely: four wavelengths, each matched to a specific chromophore target, within a single clinical system.

For clinics offering tattoo removal, pigmentation correction, and skin rejuvenation services, the wavelength range of the laser system is one of the most consequential specification decisions they make. It determines which tattoo colours can be treated to full clearance, which pigmentation presentations can be addressed, and whether the system can support additional treatments — carbon peeling, pore refinement, skin rejuvenation — beyond its core tattoo and pigmentation applications.

The Nova Picosecond delivers four wavelengths — 1064 nm, 755 nm, 532 nm, and 1320 nm — each operating through the photoacoustic fragmentation mechanism and each matched to a specific set of chromophore targets. This article examines what each wavelength addresses, why that wavelength is the appropriate choice for its target, and what the four-wavelength architecture means for a clinic's treatment menu.

1. Why Wavelength Selection Is the Primary Variable in Laser Pigment Treatment

Laser energy only produces a clinical effect when it is absorbed by a target chromophore. If the wavelength is not well absorbed by the pigment being treated, the laser energy passes through or around it — producing no meaningful fragmentation of the target and potentially depositing energy in surrounding tissue instead. Wavelength selection is therefore not a secondary parameter — it is the primary determinant of whether the laser will be effective against a given pigment colour.

Different pigment colours have different absorption spectra — the wavelengths at which they most strongly absorb laser energy. Black pigment absorbs broadly across the spectrum and is relatively easy to treat. Green and blue pigments are more selective, absorbing only at specific wavelengths that conventional laser systems often do not include. Red and yellow pigments absorb at shorter wavelengths that require a different laser output entirely. No single wavelength effectively treats the full spectrum of tattoo ink colours.[1]

This is why a multi-wavelength platform is not simply a convenience — it is a clinical necessity for any clinic that wants to offer comprehensive tattoo removal across the full range of ink colours its clients present with.

2. 1064 nm — Dark Pigments: Black and Dark Blue Ink

The 1064 nm wavelength is the workhorse of laser tattoo removal — the primary wavelength for addressing black and dark blue tattoo ink, which remains the most common ink colour presented in tattoo removal clinics. Black ink absorbs strongly across a broad wavelength range, and 1064 nm delivers high-energy picosecond pulses that interact effectively with the dense carbon-based particles that make up the majority of black tattoo pigment.

At 1064 nm, the laser energy penetrates more deeply into the dermis than shorter wavelengths — an important characteristic for professional tattoos, where ink is deposited at depth by professional tattooing equipment. Superficial amateur tattoos may be addressed at lower fluences, but professional-grade tattoos with deep ink deposition require the penetration depth that 1064 nm provides for effective fragmentation across the full depth of the tattoo.

The 1064 nm wavelength is also the most appropriate primary wavelength for treating darker Fitzpatrick skin types in tattoo removal — its deeper penetration and reduced melanin absorption at this wavelength compared to shorter options reduces the surface heating risk that makes tattoo removal more complex in higher Fitzpatrick presentations.[1]

3. 755 nm — Resistant Pigments: Green and Stubborn Ink

Green tattoo ink is among the most clinically challenging colours in tattoo removal — and its difficulty is a direct consequence of its absorption spectrum. Green pigment does not absorb well at 1064 nm or 532 nm — the wavelengths most commonly found in single or dual-wavelength laser systems. Clinics without a 755 nm wavelength cannot effectively treat green ink, regardless of how powerful their other wavelengths are.

The 755 nm wavelength sits at a point in the absorption spectrum where green pigments are significantly more absorptive than at neighbouring wavelengths — making it the clinically appropriate choice for this target. Clinical research specifically identifies the picosecond 755 nm Alexandrite wavelength as demonstrating excellent efficacy in removing green and blue pigments that resist treatment at other wavelengths.[2]

Beyond green ink, 755 nm is effective for other resistant pigments — blue-green and teal inks that fall outside the effective range of standard 1064 nm and 532 nm systems. For clinics that want to offer complete multi-colour tattoo removal rather than partial treatment that leaves resistant colours behind, 755 nm is not optional — it is the wavelength that completes the colour range.

4. 532 nm — Warm Colours and Superficial Pigmentation: Red, Yellow, and Surface Concerns

Red and yellow tattoo inks require a shorter wavelength than dark or green pigments for effective absorption — the warm colour spectrum absorbs most strongly in the green-to-yellow band of the electromagnetic spectrum, which corresponds to laser wavelengths in the 500–550 nm range. The 532 nm wavelength is the standard clinical choice for red and yellow ink, addressing the chromophore targets that longer wavelengths cannot reach.

Beyond red and yellow tattoo ink, 532 nm addresses superficial pigmentation concerns — epidermal pigmented lesions, post-inflammatory hyperpigmentation, lentigines, and the surface-level pigmentation that represents a significant portion of the aesthetic pigmentation treatment workload in professional clinics. The shallower penetration depth of 532 nm is appropriate for these superficial targets — the energy is deposited at the epidermal level where the pigmentation resides, rather than penetrating unnecessarily deep.[3]

For clinics offering both tattoo removal and general pigmentation correction, 532 nm is the wavelength that bridges both service categories — addressing the warm ink colours in tattoo removal and the epidermal pigmentation concerns in aesthetic pigmentation treatment within the same system.

5. 1320 nm — Carbon Peeling and Skin Rejuvenation

The 1320 nm wavelength extends the Nova Picosecond's clinical application beyond tattoo removal and pigmentation treatment into skin rejuvenation — specifically through the carbon peeling protocol and broader skin quality improvement applications.

Carbon peeling — also known as the Hollywood Peel or carbon laser facial — involves applying a thin layer of carbon solution to the skin surface, which the laser then targets at 1320 nm. The carbon particles absorb the laser energy intensely and are vaporised along with the surface debris, dead skin cells, and excess sebum that adhered to them during application. The result is exfoliation, pore refinement, sebum reduction, and overall skin quality improvement — without the downtime of more aggressive resurfacing approaches.[4]

Beyond carbon peeling, 1320 nm supports skin rejuvenation applications — the wavelength's interaction with dermal water and tissue supports collagen stimulation and skin renewal, extending the system's clinical scope into anti-aging and skin quality improvement for clients who are not presenting for tattoo or pigmentation treatment.

For clinics building a multi-service treatment menu, the 1320 nm wavelength means the Nova Picosecond is not a single-indication device. A client who is not a tattoo removal or pigmentation candidate can still benefit from the 1320 nm carbon peeling or rejuvenation protocol — broadening the system's commercial utility across the clinic's full client demographic.

6. What Four Wavelengths Mean for Your Treatment Menu

The practical clinical and commercial implications of a four-wavelength picosecond platform extend beyond the technical specifications of each individual wavelength.

Complete multi-colour tattoo removal — With all four wavelengths available, the clinic can address the full spectrum of tattoo ink colours — black and dark blue at 1064 nm, green and resistant pigments at 755 nm, red and yellow at 532 nm — rather than having to decline clients whose tattoos include colours outside a narrower wavelength range. Incomplete treatment of multi-colour tattoos is one of the most common reasons clients seek a second provider.

Comprehensive pigmentation treatment — Surface pigmentation at 532 nm and deeper pigmentation at 1064 nm means the system can address both epidermal and dermal pigmentation concerns from a single platform — relevant for clinics seeing a mix of superficial and deeper pigmentation presentations.

Skin rejuvenation revenue stream — The 1320 nm carbon peeling protocol creates a treatment category that serves clients who are not tattoo or pigmentation candidates — broadening the system's return on investment beyond its primary indications.

Reduced referral and repeat consultation rate — A clinic that can address any tattoo colour at the first treatment consultation retains that client through the full treatment course. A clinic that must refer clients with certain ink colours to other providers — or explain that their system cannot treat certain colours — loses both the clinical relationship and the commercial value of that treatment series.

Wavelength Coverage at a Glance

Frequently Asked Questions

The Bottom Line

A picosecond laser platform with four wavelengths is not simply a more capable version of a single-wavelength system. It is a fundamentally different clinical proposition — one that addresses the full spectrum of tattoo ink colours, bridges tattoo and pigmentation treatment, and extends into skin rejuvenation applications that serve clients beyond the primary treatment demographic.

For clinics that want to offer complete, comprehensive laser treatment without wavelength gaps that limit what they can treat — and without the referral losses that those gaps create — the Nova Picosecond's four-wavelength architecture provides the coverage that complete clinical service requires.

References

1. Picosecond Laser Treatment for Tattoos and Benign Cutaneous Pigmented Lesions — PMC (2018)
2. Effects of Picosecond Laser on Multi-Colored Tattoo Removal Compared to Nanosecond Laser — Choi et al., PMC (2018)
3. Split-Face Comparison of 532 nm Picosecond vs Q-Switched Nd:YAG Laser in the Treatment of Solar Lentigines — Kim et al., Annals of Dermatology (2020)
4. Carbon Peel Laser Technique to Improve Skin Quality — Guida et al., Dermatology Practical and Conceptual, PMC (2020)