Fractional CO₂ Laser: The Complete Resurfacing Guide

A CO₂ laser produces light at 10,600 nanometres — a wavelength absorbed so strongly by the water in skin cells that it vaporises tissue on contact. That makes it an ablative laser: it physically removes a controlled layer of skin rather than merely heating it. Ablation is what gives CO₂ resurfacing its strength, and also what gives it real downtime.

The 'fractional' part is the safety innovation. Instead of removing the entire surface in one pass — the old fully-ablative approach, with weeks of raw recovery — the beam is split into a fine grid of microscopic treatment columns called microthermal zones. Between every treated column sits a bridge of completely untouched skin, packed with healthy cells that migrate in and re-heal the treated zones within days.

That geometry is the whole trade: you keep most of the collagen-stimulating power of ablative resurfacing while cutting the visible recovery to roughly five to seven days for a typical face treatment.

Each microthermal zone does more than remove tissue. The laser's effect works on three levels, which is why one session keeps producing change for months afterwards:

Because the depth, density and energy of the microthermal zones are all adjustable, one machine covers a wide range of concerns. At DrPlus, fractional CO₂ is offered for full-face resurfacing and, with adjusted settings, for delicate areas like the under-eye region and neck. Stretch marks are treated within our dedicated stretch-mark programme.

A fractional CO₂ session is more structured than lighter lunchtime lasers, because it is a genuine resurfacing procedure with real (if short) recovery. Here is the typical arc at a doctor-led clinic:

Fractional CO₂ suits people with textural concerns — scarring, roughness, pores, fine lines — who can accept a planned week of visible recovery. It is not the right first tool for pigment problems like melasma or sun spots, where non-ablative options such as pico laser usually make more sense.

Skin tone matters. In Asian and darker skin tones, the healing inflammation itself can trigger post-inflammatory hyperpigmentation. That risk is manageable — conservative settings, sometimes pre-treatment skin preparation, and strict sun protection afterwards — but it is exactly why parameters should be chosen by a doctor who treats these skin tones routinely, not copied from a fair-skin protocol.

Results are gradual and individual. Improvement builds over months, most plans involve more than one session, and complete removal of scars or lines is not a realistic promise from any laser.

Resurfacing research gets confusing fast because brand names and physics terms are mixed freely. These are the terms worth knowing: