The goal of this clinical trial is to analyse tissue changes in the pre-auricular region after injectable (Poly-L-Lactic-Acid/Calcium-Hydroxylapatit/ and energy-based (Radiofrequency Microneedling) biostimulatory interventions in healthy volunteers. The main questions it aims to answer are: How is the Safety Profile of Biostimulatory Treatments? How are the Tissue Interactions after Biostiomulatory Treatments? Participants will: * Recieve one of 3 possible biostumulatory treatments (PLLA/CAHA/RFM) * Attend 5 follow-up appointments after treatment for checkups, surveillance and examinations.
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Inflammatory Reaction
Timeframe: From enrollment to the end of treatment at 6-8 week
Analysis of Injected Biostimulator-Deposits
Timeframe: From enrollment to the end of treatment at 6 -8 week
Tissue Interaction
Timeframe: From enrollment to the end of treatment at 6-8 weeks
Adverse Events
Timeframe: From enrollment to the end of treatment at 6-8 week