Derma roller 3 weeks post FUE, is this beneficial?

It is best to contact your doctor about post operative care and instructions since each doctor has a different regimen.Derma roller is not normally recommended after surgery.

It can take up to two months for the hairs to shed following a transplant. In some rare cases they may not fall out at all (or only some do) and simply continue growing. I wouldn't worry too much about it. Derma rollers have not really shown to do anything beneficial, in my opinion.

The use of such a device only offers you risk, risk of introducing and infection or other complications. Don't use it