I have lil bit under eye hollows with slight dark circles too. Will PRP and collagen tablets help me?

PRP encourages collagen production, which plumps the skin, which may assist in filling out dark hollows. As it helps improve blood supply and is rejuvenating, this may assist with pigmentation. It’s vital though that you get a personalised consult to see what is best for your situation.PRP uses the body’s own growth factors (drawn from your blood and spun through a centrifuge), to help promote healing and rejuvenation.
The jury is still out on collagen supplements – we do know that retinol, tretinoin and vitamin C creams may assist in collagen production according to Cedars Sinai, the non-profit health care academic organisation in the US.
However, it doesn’t matter what you put on your skin if you don’t engage in anti-ageing skin behaviours like avoiding the sun, wearing sunscreen, and minimising alcohol and smoking which all make a big difference to skin quality.
Disclaimer: All results are individual. All procedures have risks. Speak to your doctor about your symptoms.

Yes. PRP would be beneficial, but I would also recommend mesotherapy in order to increase the skin cells quality. Collagen is good for overall skin quality, if you're really unhappy with the hollows, different types of cosmetic treatments would be recommended such as hyaluronic acid.