Liquid Gold.

Platelet-rich plasma (PRP) is an increased concentration of autologous platelets suspended in a small amount of plasma after centrifugation and used for injection into a wound or a particular skin condition.

Over the technical info? Basically, PRP has gained its reputation as liquid gold with research backing to show improvement in fine lines and wrinkles, hair loss, texture and scarring when topically placed and/or injected underneath the skin.