Most people don't lose much hair on Proviron. But there's one group of people who get hit *hard*. If you're already prone to lose hair - and you're taking finasteride or dutasteride to keep it under control, you're very likely to lose a LOT of hair. Because Proviron doesn't raise your test converting to DHT - it already *is* a methylated form of DHT. So the finasteride or dutasteride is useless to prevent hairloss from Proviron.