PRP results usually appear 3-6 months after beginning a series of PRP treatments because of the cycles hair follicles follow. The resutls can continue to improve up to a year. Typically, we recommend 4 sessions approximately one month apart and then maintaining the results in 4-6 month increments.
It’s very difficult to say how long it will take to show results. From our experience if patient is properly treated , he or she should see hair growth within 6 months.