This was copy-pasted from Medical News Today
Commonly known as the "Vampire Facial", Microneedling with PRP is a cosmetic treatment that stimulates collagen production by rolling fine needles over the skin and applying platelets, which are one of the components of blood.
The addition of PRP from the blood may make microneedling more effective. The liquid in the blood is plasma, while platelets are solid. Platelets help blood clots, so they are vital for healing wounds and injuries. PRP is plasma in which the concentration of platelets is higher than that of other components of the blood.
A practitioner will take a blood sample and then use a spinning tool called a centrifuge to separate the PRP from the rest of the blood.
PRP contains proteins, including growth factors and cytokines. These proteins help skin tissue repair itself.
First, a practitioner will use a microneedling tool to prick the skin, making tiny holes in the skin’s surface. They will then apply PRP to these tiny holes to encourage collagen production and cell reproduction.