I haven’t because I am not convinced that it is the best hair loss product available today. If you search for Procerin reviews you will find lots of sponsored reviews written by the marketers of Procerin. Procerin claims to be an all-natural solution for hair loss but I doubt that such solution exists. The only proven hair loss remedies are Propecia (its active substance is finasteride, requires prescription) and Rogaine (minoxidil). And hair transplantation if you have lost substantial portion of your hair. But if you wish to avoid using drugs and want to try some experimental products then Procerin is one of many such options. It seems to include every herb, vitamin and mineral that has ever been thought helpful in promoting healthy hair growth.
You can read some unsponsored Procerin reviews here:
http://www.greyhairloss.com/blog/procerin.html
http://www.amazon.com/review/product/B000F49F7U/ref=cm_cr_dp_all_helpful?%5Fencoding=UTF8&coliid=&showViewpoints=1&colid=&sortBy=bySubmissionDateDescending