A case of a delayed granulomatous reaction on the face following microneedling: A case report.

Delayed facial granulomatous reaction is an uncommon adverse event following microneedling. Increased risk may be related to peri-procedure use of cosmeceuticals such as Vitamin C. Given the popularity of microneedling, and that it is an unregulated procedure, it is important for dermatologists to be aware of this possible sequela in order to counsel patients appropriately and understand management options.