PRP and effectiveness for hollowness and skin redness?

Yes, prp can be effective for this, but I recommend combining with lasers and microneedling to get the most improvement. See an expert. Best, Dr. Emer

PRP will definitely help with loss of volume, it will reduce the hollowness. It will also help with tone, color, evenness and texture. 

PRP injections can diminish lower lid puffiness and swelling. Loss of volume may be replaced with PRP/filler, filler or fat injections. Platelet rich plasma should further improve skin texture and quality, decrease swelling and possibly improve the longevity of filler injection.Please consult in person with an experienced Board Certified Specialist prior to making treatment decisions.

There is a lot of pseudoscience and marketing that surrounds PRP, in part due to a lack of standardization of this modality. 
The reality is that it does 'not' do very much when injected for aesthetic reasons to the face. After a few minutes, it gets washed out by the blood flow. It is most certainly not a meaningful solution for hollowness! 
There are better 'variants' of PRP, mind you. Also, it should be used in conjunction with other modalities and products. When used in isolation, however, all it does is to give very temporary volumization with no other tangible change.

Hi NoVaFace,It's hard to tell what can be done without photos. But yes, microneedling with PRP could work. However, we don't suggest injecting the PRP but just spreading it on before and after microneedling. Ask your doctor whether you are a good candidate for dissolving vascular lesions and discoloration with lasers.All the best, Justin Harper, M.D.