Hello KHarris95, At our office we use the patients prp to inject underneath the eyes to fill in the hollowness, correct dark circles, helps with puffy bags and fine lines and wrinkles. This treatment is very cost friendly and can last much longer than fillers because it is your own platelets it can last years compared to the less then a year with fillers. Some patients need a single treatment to correct the under eye issues but others could need more depending on their concerns. I hope this helps KHarris95!