What Causes Dandruff And Excessive Hair Loss After Using Minoxidil 5% With Finpecia?

Hi Sir, I m worried about my hair loss as its elevated from the front i m using minoxidil 5%(hair4U) with finpecia from past 3 weeks but upon application it is resulting in dryness, irritation due to dandruff and loss of hair and for the few days i ve stopped using it. could i know that is it balding me or showing of the response