How does PRP thicken miniaturized hair?

The  simple answer is that both occur with PRP. Some hairs cycle from telogen to anagen phase. Some hairs increase in diameter. There can be an increase in 30% for both diameter and density. ( Hausauer)Jeff Rapaport MDCore Aesthetic Realself

Such an interesting question. From my reading and experience, there are studies showing a cuff of inflammatory cells that surrounds the follicle in some patients with androgenic alopecia.  PRP likely modulates this inflammatory response revealing the hair of inflammation. PRP works differently and cooperatively with treatments based in hormone modulation.  I have seen countless examples of patients benefiting from PRP treatment for hair loss with 1) less shedding 2) increased diameter 3) new hair growth after PRP treatment. Best of luck!

PRP is an excellent way of both growing new hair and thickening up fine hairs.  Several treatments are needed as well as ongoing maintenance.  A thorough work-up should be performed at the time of the consultation to ensure that no organic cause for the hair loss is left untreated.  Please consult an expert in PRP for the best results.  Best, Dr. Green