PRP is not a permanent solution. Generally, one treatment per year is required to maintain results. Also, androgenetic alopecia is caused by the hormone DHT (dihydrotestosterone) and PRP, which does not mitigate the effects of this hormone. Additional hair loss products and blockers may need to be used for optimal long-term results. Despite some limitations, PRP injections have shown beneficial therapeutic effects on hair loss in men and women, without major side effects in women. It is good to increase the thickness and density of hair loss as a stand-alone treatment or after a hair transplant.