How it works
Why the wavelength decides the indication list
At 1550 nm the absorbing target is tissue water. Melanin barely competes there, so epidermal pigment isn't the gatekeeper it becomes on a 532 nm or 694 nm device. Each focused micro-spot lays down a narrow column of coagulated dermis while the surface stays essentially closed. Untreated tissue between the columns supplies the repair. Our device documentation describes that surrounding tissue as forming heat bridges, which start the ordinary wound sequence: inflammation, then proliferation, then months of remodeling.
Penetration reaches roughly 2 mm at the deepest settings. Treat that figure as the practical boundary of the device class. Scarring that sits below the reticular dermis is not an EF-01 problem to solve. The concept itself traces back to the fractional photothermolysis work published by Manstein and colleagues in Lasers in Surgery and Medicine in 2004, which established that a grid of microscopic thermal injury zones remodels skin while leaving reservoirs of intact tissue for healing.
Spot size, density, coverage
Four densities per square centimetre: 36 spots (6×6), 144 (12×12), 324 (18×18) and 576 (24×24). Fractional coverage works out to roughly 1.56%, 6.25%, 14.06% and 25% in that order. Scan areas are 1×1, 2×2 and 3×3 cm, and the pattern can be square, rectangular, triangular, rhombic or round. That matters when you're working around a nostril or an orbital rim rather than a flat cheek.
Spot diameter depends on the lens cone fitted. Fixed-focus cones in the archive reach down to a few tens of microns; zoom cones open the spot out toward 2000 µm. Smaller spot at the same pulse energy means a deeper column. When you compare quotations, insist that the spot range be stated per lens cone rather than as one headline number.
Energy, pulse width, interval
Pulse energy adjusts from 2 mJ to 200 mJ in 2 mJ steps. Pulse width runs 0.067 ms to 6.7 ms. Pulse interval starts at 1 ms. Here's what buyers miss reading a spec sheet: the ceiling is not the working range. Facial protocols recorded in our documentation sit far lower, mostly between roughly 8 and 55 mJ depending on the site and whether topical anesthetic was applied. Eyelid and temple work lives at the bottom of that band. Jawline and contour work at the top.
Randomized scan order
Spots don't fire row by row. The scanner distributes them in a randomized sequence so heat never stacks in one patch of tissue between passes. Less discomfort at the same nominal dose, and a wider thermal margin for the operator.
Applications
Indications the parameter set supports
- Atrophic acne scarring, particularly rolling and shallow boxcar types — see our acne and acne scar solutions
- Fine to moderate wrinkles: lower eyelid, crow's feet, forehead, cheek
- Enlarged pores, rough texture, uneven tone
- Striae and mild laxity
- Photoaged skin needing general textural reconstruction, which is the photorejuvenation workflow
Where to send the case elsewhere
Deep ice-pick scars and thick fibrotic tissue respond better to an ablative column. That's CF-01 territory, and our scar treatment notes lay out the decision. Discrete pigmented lesions belong on a Q-switched platform such as the QN-03, not on a water-targeting fractional laser. Laxity with no textural complaint is a bulk-heating job; look at RF-01 instead.
The contraindication list in the operating documentation is short and specific: filler in the treatment field, botulinum toxin within the previous week, RF or e-light treatment within the previous week, ablative resurfacing within three months, pregnancy, a history of hypertrophic scarring, and caution in photosensitive patients. This page is technical background, not medical advice. Protocol calls belong to the licensed clinician operating the device.
Key advantages
What separates it on a shortlist
- No hard phototype restriction. A retrospective chart review in the Journal of Drugs in Dermatology, covering 115 nonablative 1550 nm sessions in Fitzpatrick IV to VI patients, recorded post-inflammatory hyperpigmentation in five sessions, with only one episode running past a month — a result obtained with pretreatment and posttreatment topical hydroquinone 4%. Conservative density, a test patch and a pigment-suppression regimen are part of that safety profile, not optional extras.
- Air cooling. One less failure mode, no water change, nothing to bleed before shipping the unit for repair.
- Three source powers on the same chassis, so you aren't forced to buy 30 W to run pore and texture work.
- Pattern, density, energy, pulse width and interval all move independently. Dose gets tuned per site, not per preset.
- No disposable tips. Running cost is essentially power, topical anesthetic and eventual lens cone servicing.
What to check at acceptance
Ask for the IEC 60601-2-22 test report. That's the particular standard for surgical, cosmetic and therapeutic laser equipment, and it underpins the CE technical file. On the machine itself, verify four things: key switch, emergency stop, remote interlock connector, and the preheat delay at power-on. Eyewear must be rated for 1550 nm — goggles from your hair removal diode are the wrong wavelength and give you nothing here. Confirm the mains spec matches your room before the crate leaves, since the standard build is 220 V, 50 Hz. Our service team supplies the document set with the unit.
