Thank you for your question about PRP (Platelet Rich Plasma) facial rejuvenation. Typically it is done by way of drawing the patient's blood, spinning it down in a centrifuge, drawing off the layer of Platelet Rich Plasma, then microneedling it into the skin. The PRP can also be injected into areas of the skin, including the scalp....which helps with hair rejuvenation. By using a patients own PRP you can get the benefits of their own growth factors which can stimulate collagen production. This will decrease fine lines and wrinkles, improve skin texture and tone, minimize pores, even treat acne scarring and stretch marks. When using the PRP (platelet rich plasma) microneedling technology for facial rejuvenation it is likely you would need 1-2 a year to achieve and maintain desired results. For hair rejuvenation, scar treatment, stretch mark treatment, or treatment of melasma/pigment issues it will likely take multiple consecutive treaments. There is little to no downtime with PRP microneedling. If PRP is delivered by injection, common side effects can be bruising and/or swelling. It does not have any neuromodulating capabilities like Botox (it won't relax muscles), but used in conjunction with Botox it has the ability to significantly improve fine lines and wrinkles. To be sure, see two or more experienced, licensed and board-certified providers in your area for a complete evaluation to make sure you are a good candidate and that it is safe for you to have treatment. I hope this helps.