Frequency of dermaroller?

Hello doctor Rassman I have some questions about the use of minoxidil and derma rolling I have a 1.5mm derma roller and use minoxidil foam is 1.5mm too long? You can’t really find a definite answer on the internet how often should I derma roll on my scalp with a 1.5mm derma roller and how long should I wait before applying minoxidil after?

Frequency should be once a week and when you apply minoxidil. It should be rubbed into the open holes so it should be shortly after using the derma roller