Since Platelet Rich Plasma (PRP) is derived from a person’s own blood, it drastically reduces the chances of a person suffering a rejection or an allergic reaction from the use of PRP.  This is one reason why people opt to use platelet-rich plasma as it can safely stimulate the growth of their hair, especially for people who are unable to use other modes of treatment. It is also great for people who want to get treatment done in the crown area but which are not a candidate for a hair transplant due to any reason.