It may take up to 90 Days or longer to see the results of your PRP therapy. It depends upon multiple factors like the cause for hair loss, your genetic hair growth cycle, any underlying disease, or the extent of hair loss. In case of a positive family history for hair loss, you may require maintenance sessions quarterly. Usually after 3 sessions you can see the difference. In case of extreme hair loss, PRP therapy will stop the hair fall initially, followed by new hair growth, later on improving the overall health and shine of your hair.
It is better to take photographs before your treatment to compare your hair growth after the treatment.