Background and objective.

The combination of minimally invasive techniques is very common to treat aging skin.

The objective of this trial is to evaluate an intensive treatment protocol for facial rejuvenation, in a single, combined and sequential session, using high intensity focused ultrasound (HIFU), fractional CO2 laser and autologous platelet rich plasma (PRP).

Methods.

Pilot trial to evaluate the efficacy and safety of the combined treatment in a selected sample of 15 patients (phototypes III-V) with evident signs of facial aging. Efficacy was assessed blinded by 2 independent experts by comparing photographs before treatment and 3 months later. The variables analyzed (degree of pain, laxity, global rejuvenation and satisfaction) were quantified using ordinal quantitative or qualitative scales. Safety is assessed by follow-up notes in medical records.

Results.

Significant improvements in laxity reduction were achieved in the upper, middle, and lower thirds of the face (p=0.026, p=0.011, p=0.003). On the scale of global aesthetic improvement, according to the expert evaluators, 14 participants (93%) consider themselves "improved" or "very improved". All patients recognized some kind of improvement, 9 indicated being "very satisfied", 3 "satisfied" and 3 "moderately satisfied". The treatment was painful, but sufficiently tolerated by the majority of patients. There were no unexpected side effects or major complications, with good postoperative recovery. In general, the patients returned to their work activities 10 days after treatment.

Conclusions.

The efficacy/safety profile of the tested method has been very favorable in the series investigated.

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