Fractional CO2 Laser Resurfacing — MiXto SX

Skin rejuvenation and resurfacing using the MiXto SX fractional CO2 laser, addressing wrinkles, sagging, acne scarring, enlarged pores, and age spots in a single treatment session. The fractional technology creates thousands of microscopic treatment columns in the skin, leaving surrounding tissue intact for faster healing, while stimulating a powerful collagen remodelling response. EsteticUsti's clinic describes it as 'the most effective rejuvenating treatment' available in its portfolio, delivering results that would previously have required multiple separate procedures. Treatment covers the full face in approximately 30 minutes, with the neck, décolletage, and hands also treatable.

The MiXto SX (manufactured by El.En. Group, Italy) is a fractional CO2 laser that operates at 10,600 nm — the wavelength at which water in skin tissue absorbs infrared light most efficiently. Unlike ablative CO2 resurfacing, which removes the entire epidermis, the fractional approach stamps a grid of microscopic treatment zones (MTZs) across the skin surface. Each MTZ is a column of coagulated tissue approximately 120–250 microns wide; the skin bridges between columns remain intact and serve as a reservoir of viable cells that accelerate healing and dramatically reduce recovery time. The mechanism produces two simultaneous effects: ablation of the outermost damaged epidermal layers (removing wrinkles, pigmented lesions, and scarring), and deep dermal heating that denatures existing collagen and triggers a wound-healing cascade. Over the following 3–4 months, fibroblasts synthesise new, reorganised collagen and elastin — resulting in tighter, more uniform skin that continues to improve beyond the immediate post-peel appearance. The clinical session lasts approximately 30 minutes for a full face. A topical anaesthetic may be applied 45 minutes before treatment for comfort. The post-treatment course follows a predictable pattern: days 1–2, the skin appears bronzed or dotted as MTZs desiccate; days 3–4, gentle peeling begins; days 5–6, the treated layer sheds completely to reveal fresh skin. Patients must use Avène Cicalfate cream and SPF 50+ sunscreen, and avoid direct sun exposure for 2–3 months. The MiXto SX is suitable for wrinkles, post-acne scarring, pigmentation irregularities, enlarged pores, and mild skin laxity. A second session can be performed 8 weeks after the first if additional refinement is desired. Active skin infections, recent sun exposure, and pregnancy are contraindications.