EFFECT OF MICROFOCUSED ULTRASOUND APPLICATION WITH THE PEN TIP, AN ANATOMICAL APPROACH TARGETED FOR FACIAL ANCHORING: PRECISION AND SAFETY IN NON-SURGICAL REJUVENATION

The demand for non-invasive, low-cost treatments for facial rejuvenation and lifting has increased significantly in recent decades. Portable microfocused ultrasound with a pen tip, using "point-to-point" microthermocoagulation technology, is a technology capable of thermally stimulating different tissue depths, including the superficial musculoaponeurotic system (SMAS) and the deep and superficial dermis at different depths, generating SMAS contraction and restoring dermal reorganization, primarily associated with collagen synthesis through HSP47 activation, with a tissue anchoring effect and skin firmness. In this study, we used the protocol previously validated by the authors, which facilitates tip selection based on the anatomical tissue depth and subcutaneous fat thickness. The technique is based on measuring tissue thickness by manual clamping adipometry, using an adipometer in strategic anatomical regions, such as the submental region (double chin), the lower third of the face, and the upper eyelid. Skinfold thickness is interpreted as a 50% reference point for selecting the ideal tip, correlating it with the necessary and safe depth of action for intentional layered application. The therapeutic approach improved the firmness and tissue support of the dermis, particularly in the subocular region, temples, and nasolabial fold. Therefore, it can be concluded that the use of microfocused ultrasound with the point-by-point technique and following the depth chart in the facial region is a safe and effective therapeutic approach for treating skin aging, as it improves tissue support and restores the tissue matrix, which also contributes to improving skin laxity. More importantly, intentional compaction of loose tissue and a natural facial contour were observed