Is it safe to use Dermaroller on the neck?

You can use the 1.5 mm dermaroller on the neck if you follow the insert instructions.Dr Karamanoukian

In the US, legally we have to advise you to goto 0.25mm at home. In the office, we can go to 1.75-2.0 mm without problem. Like Dr Schwartz I do not like rolling on the neck- too much ripping and tearing of the skin, thus leaving marks. Best use a stamping device. See the attached video for how to roll, but the differences in rolling and stamping.All the best, and be safe.Dr Davin LimLaser DermatologistBrisbane, Australia. 

It is safe to do micro-needling on almost any areas of the body as long as you do not use needles longer than 1.5 mm. However, I am not a fan of "rollers" as they create a more
erratic pattern of "tears" through the skin rather than the clean,
more evenly distributed punctures seen with the motorized micro-needling
machines.