BioMold: A Standardized Template to Optimize Safety and Precision in Poly-L-Lactic Acid Injection Procedures

Poly-L-lactic acid (PLLA) is widely used in aesthetic medicine for its ability to induce neocollagenesis and restore facial volume. Although considered a predictable procedure, technical variability during injection, particularly inconsistent volumetric planning and heterogeneous product distribution, may result in nodules or surface irregularities. This technical report introduces and describes a reusable silicone template designed to assist in volumetric planning for PLLA-SCA (Sculptra; Uppsala, Sweden: Galderma) injections. The BioMold (São Paulo, Brazil: TAB Instrumentos Cirúrgicos Ltd) was developed to support clinicians in performing more structured treatment mapping compared with conventional freehand marking approaches. Rather than relying exclusively on linear retroinjection patterns, the device proposes a spatially organized planning strategy based on predefined geometric sectors. By incorporating commonly adopted reconstitution parameters (10 mL total volume: 8 mL sterile water + 2 mL lidocaine) and the frequently used dose reference of approximately 0.2 mL/cm², the template is intended to help estimate treatment area and injection volume per vector. The device is available in three base sizes (3 cm, 4 cm, and 5 cm), corresponding to volumetric areas of approximately 7.2-12 cm² and suggested injection volumes of 1.4-2.4 mL. Its trapezoidal geometry and integrated slots allow clinicians to transfer retroinjection pathways directly to the skin, which may support more uniform product distribution compared with conceptual mapping techniques. BioMold represents a standardized physical mapping alternative to subjective freehand planning in PLLA procedures. While clinical performance and outcome impact require future investigation, the device is intended to improve planning reproducibility and procedural organization in biostimulatory treatments.