Can SMP in the sideburns cause a small bald patch next day?

Scalp Micropigmentation SMP does not affect transplanted hair or harm existing hairs.  It should not harm hairs, but there are so many people offering SMP the quality and and the techniques may be different. 

mikedavis84,It is hard to damage follicles if the smp is done in the standard manner. The needle used is tiny and the depth is very shallow reaching only into the dermis. The question Dr Rassman asked is an important one because sometimes it is the epinephrine in the local anesthetic that can shock weak hair in the area.

Speak with your doctor, the doctor who did the SMP and ask that question. Did you have anesthesia as that is important information to have for me