should i use minoxidil at 15

A.P said
Are you suggesting more?
I’ve been using 1ml a night for my hairline along with oral fin.
( I’m wondering if I’m doing this wrong, hair is the main thing that I am uneducated it and the main thing I’m worried about)

For OP's question, far less
For you the 1ml are enough, any excess will go systemic throught penetrating skin barrier and so blood