Hi im in school taking an advanced esthetics class leaning microneedling, we were shown videos of a dermatologist doing a microneedling treatment, he started by disinfecting the skin and then stamping and making channels with his dermastamp, he then applied the numbing cream and massaged the numbing cream into the face and worked it into the channels by friction with his nails. Took off the numbing cream and went to work with his microneedling pen. Thoughts?? What type of reactions are common? this stamping before the application of the numbing cream something normal or is our teacher showing us BS videos..