A Clinical Study Testing How Well the Medical Device HTIC (a Type of Animal-derived Collagen) Works in Treating Skin Problems, Such as Scars, Loss of Firmness, and Volume in Certain Areas of the Face and Body

HTIC is a sterile collagen powder (100 mg) contained in a glass vial, which is diluted by adding 5 ml of saline solution (0.9% sodium chloride solution) to obtain a suspension. This suspension will be prepared immediately before treatment. The procedure consists of performing a few microinjections of the product (0.1 ml per injection) into the dermis at intervals of approximately 2 cm, using a very fine needle (30G/32G, 4 mm) in the areas to be treated (face, neck, décolleté, and hands).