I smoke almost 5 to 6 cigarettes a day. Should I be worried about smoking? I had 2 sessions of PRP for hair loss (Photo)

Thank you for your question, This needs an in-person evaluation. I suggest seeing a hair loss expert now to evaluate and go over your condition and provide you information about your best treatment options. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer

Smoking can decrease blood flow and healing in the scalp, but probably has little effect on the PRP treatment.  That said smoking causes cancer, heart disease and many other bad things, so you should quit if you can so you can enjoy your hair for a long time.

You are being counter productive. The nicotine in cigarettes causes the blood vessels to contract and starves the hair follicles of important nutrients and oxygen. It's either one or the other. Stop smoking or give up the PRP treatments.