How do I use minoxidil? Sophie July 13, 2018 01:46 Updated Follow For more information on how to apply minoxidil, including an instructional video, click here. Related articles How do I take finasteride? How long does it take for Keeps hair loss treatments to start working? What is minoxidil? I've started my treatment but I'm still shedding hair. Is this normal? Do you sell foam minoxidil? Comments 0 comments Article is closed for comments.