finasteride oral only works against DHT so the only steroids it would help with would be Test, Dbol, and methyltest. most other steroids are DHT derivitives to begin with so they can't convert back to DHT.
topical spironolactone and Azelex (azelaic acid) cream is what i use. i crush up spiro (aldactone) tabs in my shampoo and i use Azelex on my scalp at night. i didnt always do this so i have some hairloss but i'm trying to stop further loss right now and i think its doing a good job. proanthocyanins are supposedly proven to work to regrow hair as well as minoxidil according to a japanese study. i put some of that powder in my shampoo as well, i'll let you guys know if i see any difference 6 months from now.