Fractional Laser Skin Resurfacing

Fractional laser resurfacing is based on the concept of fractional photothermolysis: the laser beam is split into thousands of narrow micro-beams, each creating a microscopic thermal injury column called a micro-treatment zone (MTZ) while sparing the tissue between the columns. The undamaged surrounding tissue serves as a reservoir of cells for rapid healing, and the local inflammatory cascade initiated by the MTZs drives fibroblast activation and new…

At AE Derm MUDr. Helena Závodská applies fractional mode via the Fotona Er:YAG laser. Er:YAG at 2940 nm has the highest water absorption of any medical laser wavelength, meaning its energy is deposited very precisely in the superficial epidermal and dermal layers with minimal thermal spread to surrounding tissue. By adjusting pulse parameters, the depth of ablation and the density of coverage can be calibrated to the patient's skin concerns and tolerance:…

Before the session topical anaesthetic cream is applied for thirty minutes to minimise discomfort. During treatment patients typically experience warmth, a mild stinging sensation and a gritty surface texture. Immediately after, the skin appears red and may feel rough — the surface of the treated micro-columns sloughs in the following four to seven days as new epithelium migrates in from the surrounding intact zones. Social downtime is typically four to…