PRP and Scarring Alopecia
Platelet-Rich Plasma therapy has been explored as a treatment for scarring alopecia.
https://www.ncbi.nlm.nih.gov/m/pubmed/31823902/
This paper demonstrates the efficacy of combination therapy in treating male and female pattern hair loss.
The key is to be compliant with at least one therapy for success.
Combination therapy makes the success more likely for patients that can do two treatments at once.