Post-market Study on BtHCROSS® for Restoring Facial Volume After a Single Injection

Inclusion Criteria: * Male or female, aged between 30 and 70 years. * Individuals showing mild to moderate signs of facial skin aging (such as loss of brightness, hydration, and/or firmness). * Sufficient willingness and ability, as judged by the investigator, to complete the study questionnaires. Exclusion Criteria: * Pregnant or breastfeeding women. * Known allergy or sensitivity to hyaluronic acid or any other ingredient in the product. * Individuals who have undergone any wrinkle correction or rejuvenation procedures in the past 6 months or during the study (e.g., radiofrequency, electrotherapy, botulinum toxin, thread lifts, or laser techniques). * Autoimmune or inflammatory diseases, or any condition affecting skin health that could interfere with the treatment. * History of any illness or infection in the injection area during the study. * Lymphatic and/or vascular disorders. * Individuals with unrealistic expectations about the treatment outcomes. * Previous facial surgery. * Active infection in the treatment area. * Blood coagulation disorders. Subjects on anticoagulant therapy are excluded, even without a diagnosed coagulation issue, unless cleared by their prescribing specialist. * Subjects with unrealistic expectations regarding the likely outcomes of the treatment.