US Patent No. 8,518,422 B2; La Prairie Group AG, Zurich, has patented a cosmetic or dermatological preparation in the form of at least one gel, an O/W emulsion, a W/O/W emulsion, a W/O emulsion, a microemulsion, an ointment, a cream, a dusting powder, a foam, an aerosol preparation and/or a cosmetic stick. It is obtainable by combining at least one of collagen and a derivative thereof; at least one of chitosan and an acetyl derivative thereof with a degree of acetylation of up to about 50%; at l...