Current, scientifically validated, use of PRP include treatment of chronic and soft tissue ulcerations, applications in the periodontal and oral surgery, maxillofacial surgery, orthopaedic and trauma surgery, cosmetic and plastic surgery, spinal surgery, heart bypass surgery, and burns. In all mentioned applications, PRP showed to have a positive influence on the tissue recovery and regeneration. Local PRP application in damaged animal and human skin showed to have regenerative properties. Structural changes to the dermal layer were observed in biopsies.