Should I start minoxidil first?

I only really have hair loss on my hairline. I was debating whether I should start out with applying minoxidil to my hairline to see if I respond to it and then maybe add in fin after 4-6 months. That way, I have a gauge on whether I should keep using minoxidil or not rather than start both at the same time and never truly know if minoxidil is doing anything for me. The only possible exception...

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