This Study Aims to Evaluate the Safety Profile and Tissue Changes After Biostimulatory Treatments to the Face in Healthy Volunteers

The goal of this clinical trial is to analyse tissue changes in the pre-auricular region after injectable (Poly-L-Lactic-Acid/Calcium-Hydroxylapatit) biostimulatory interventions in healthy volunteers. The main questions it aims to answer are: How is the Safety Profile of injectable Biostimulatory Treatments? How are the Tissue Interactions after injectable Biostiomulatory Treatments? Participants will: * Recieve one of 2 possible biostumulatory treatments (PLLA/CAHA/ * Attend 4 follow-up appointments after treatment for checkups, surveillance and examinations.