I use 1.5mm nowadays and put androsterone and mk-4 on my face afterwards. I also make sure to get enough collagen and b vitamins day to day. I don't do the 1.5mm everyday, just every now and then(once a week). I have pretty thick skin though, so its probably wise to do it less often or get needles that aren't as long.Mewing is one of the only tongue force generation techniques (without counting proper swallowing pattern) I am aware of.
What mm of derma roller do you use and do you put anything special on your skin right after you derma roll? (I've done dermarolling before with great results but I had no routine to go off)