What if you used hair regrowth formula on your hair, but you aren't losing hair or balding at all?

Just curiosity, what would happen if you used hair regrowth formula on your hair but you are not going bald at all? would your hair grow faster? or would it die?What if you used hair regrowth formula on your hair, but you aren't losing hair or balding at all?
Hair is already dead. Stuff like Retinol will kind of make your hair shed for a while. then your hair will start to grow after a long period of usage.What if you used hair regrowth formula on your hair, but you aren't losing hair or balding at all?
nothing would happen (or sometimes it over grows)

Ltd