Fractional CO2 Laser Resurfacing — MiXto SX

The MiXto SX is a fractional CO2 laser manufactured by Lasering (Italy), designed around the principle of fractional photothermolysis: the CO2 beam (wavelength 10,600 nm) is divided into a precise grid of micro-beams, each creating a narrow column of thermally ablated tissue (a micro-ablation zone or MAZ) through the epidermis and into the upper dermis. Between the ablated micro-columns, islands of intact, uninjured skin remain. These islands serve as a…

The 'fractional' design is the key differentiator from older fully ablative CO2 lasers: because only a fraction of the skin surface is ablated per session (typically 20–40% of the treatment area, adjustable), the healing time is drastically shorter. A fully ablative CO2 treatment may require two weeks or more of recovery; a fractional treatment of similar depth requires only four to seven days. This also allows the treatment intensity to be calibrated —…

At Estetické centrum Praha MUDr. Renata Handlová performs the MiXto SX treatment after applying topical anaesthetic cream to the skin surface (typically thirty minutes before the procedure begins). The laser handpiece is passed systematically across the treatment zone — full-face treatment takes approximately thirty minutes. During the session patients experience a sensation of heat and brief stinging at each pulse, described as similar to hot pinprick.…