Would finasteride work on my crown? (Photos)

Assuming you don't experience any side effects I think it may be of some benefit to adad Finasteride.You have a fairly advanced pattern so you should do everything possible to prevent any further loss.I would suggest scheduling a consultation with a Dermatologist or experienced Hair Restoration surgeon to discuss your options.

By
your account, minoxidil seems to be helping as you are seeing hair sprout.  Finasteride has been reported to work best on
the crown.  Patients often use both medication
together as there are reports of a small but added benefit when used together.  See a hair restoration surgeon to discuss your case as there are other options ie hair transplant, laser etc.

Based upon the severity of loss, you may be a candidate for grafts. PRP is an option, but is unpredictable in results.
You should seek the advice of a qualified hair specialist prior to an intervention.

I'd recommend switching to organic products for your shampoo and conditioner, and to look in to preventative medications like Finasteride and Minoxidil which has been proven to halt and even reverse hair loss.  PRP would also be an option for you. Before starting any medications it is best to check with your physician.

Uou have Extensive hair loss with Class 4 or 5 pattern. If you are under 24, you might see value with finasteride, however such patterns, particularly in young men, are telling of an even more advanced hair loss pattern. See a good doctor and develop a Master Plan with that doctor, see below