The present invention provides a pharmaceutical preparation for use by injection into the skin, wherein the pharmaceutical preparation is preparable by a production method comprising the steps of providing a liquid collected from an organism, which liquid comprises cellular constituents of blood, providing a vessel or containment means, said vessel or containment means having an internal surface, and contacting said liquid with said vessel or containment means, wherein (a) said production method further comprises the step of incubating said liquid in said vessel or containment means for an incubation time, and optionally removing cellular constituents of said liquid after said incubation, (b) said liquid comprises exosomes, and said production method further comprises the steps of concentrating said exosomes and optionally removing cellular constituents of said liquid after said concentration, or the step of isolating said exosomes, or (c) said production method further comprises the step of avoiding incubation of said liquid, and the step of removing cellular constituents of said liquid contacted with said vessel or containment means.La presente invención provee una preparación farmacéutica para ser utilizada mediante inyección en la piel, en la cual la preparación farmacéutica se puede preparar mediante un método de producción que comprende los pasos de proveer un líquido recolectado a partir de un organismo, cuyo líquido comprende constituyentes celulares de la sangre, proveer un recipiente o medios de contención, dicho recipiente o medios de contención tienen una superficie interna, y poner en contacto dicho líquido con dicho recipiente o medios de contención, en el cual (a) dicho método de producción también comprende el paso de incubar dicho líquido en dicho recipiente o medios de contención durante un tiempo de incubación, y opcionalmente retirar los constituyentes celulares de dicho líquido después de dicha incubación, (b) dicho líquido comprende exosomas, y
