PRP or Minoxidil or Viviscal? What can I do for diffuse thinning hair loss?

In my opinion, you should be evaluated by a hair loss expert. They will do a magnified exam, good history and possibly blood work. Should you have female pattern hair loss of a genetic nature, treatments include minoxidil, low level laser, platelet rich plasma and microneedle rolling. I believe the most effective of these  is platelet rich plasma. We've been able to see an increase in hair thickness, decrease hair loss and hair regrowth in some patients. The hair regrowth depends upon how long the hair has been dormant.  Hope this helps. Good luck.

I suggest a formal consultation to determine what is best.  There are many options and often the combination is better than individual treatment alone.  Best, Dr. Emer.

In order of efficacy, the multivitamins you are currently taking work well, minoxidil topically, finasteride orally or topically, are a bit more effective.  PRP depending on the amount and frequency used  will be the next step in increased efficacy, and ultimately stem cell therapy can be 4-5x the efficacy of PRP stand alone treatment. Ensure that you are using only organic products for your scalp devoid of sodium laureth sulfate. 

Women who lose their estrogen support for their hair and have the genes for genetic hair loss, reflect almost 50% of the female population in the US, so you are not alone. Things like PRP are questionable. Rogaine (minoxidil) might work. Some doctors prescribe finasteride and in a small number of women this works without much down side. Speak with your doctor more about what I discussed above

In order to give the best treatment options, first you need to be seen by a hair loss specialist to find the cause for your hair loss. Once the cause is established then the proper treatment can be recommended. In some cases a combination of all three can help.