I bought a ZGTS 0.5 mm derma roller and am scared to use it. I have done all the research about its benefits and what not to do but the idea still sounds creepy. But hearing of all its benefits, I wanna get myself together and go for it. I just wanted to know which vitamin c serum would be best to use after the procedure. Also, if I wash my face within 24 hours what shall I apply on my face?