6 months topical finasteride and melatonin and multivitamins (polycystic ovaries and iron deficiency)

I went to a central London dermatologist (pretty expensive). For my temporal hair loss. I also had hormonal acne. My immediate family have very strong hairline genes. She believed it was hormonal however did not think it was PCOS as I have regular periods and no excessive facial hair. However I am vegan (11 years). So she did vitamin blood profile. My ferritin was next to nothing and I was also low on zinc and vitamin D.

I started taking the multivitamins that she makes and the topical finasteride and melatonin serum she also produces (its expensive stuff - £260 however a bottle did last me like 6 months). Once I ran out of those vitamins I instead bought pregnancy multivitamins from my local drug store as they were much cheaper but had the vitamins needed for hairgrowth. I recently had my bloods done again and my iron is back up. I also had my bloods done at a private online fertility service and turns out I do most likely have polycystic ovaries (my testosterone is high and other levels are out of whack) I just don't have the syndrome bit. But this is probably what is causing the hair loss and acne and then the vitamins deficiency didn't help. Either way, I am seeing a fair bit of new growth using just the multivitamins and topical solution.