Injectable hyaluronic acid for aesthetic treatments; injectable silk proteins, namely fibroin and sericin, for aesthetic treatments; injectable platelet rich plasma for aesthetic treatments; injectable platelet rich fibrin for aesthetic treatments; biological preparations for medical use, namely, platelet concentrate, platelet rich plasma, platelet poor plasma, fibrin gel, platelet rich fibrin, stem cells, hyaluronic acid, chitosan, silk sericin, silk fibroin, or any combinations thereof; pha...