[Swan]

The Question's mask is made from Pseudoderm, a substance made by Doctor Aristotle Rodor. According to the revamps of 52, this substance was developed using technology lifted from an old Batman foe named Bart Magan (Dr. No Face) and Gingold Extract, a fruit derivative associated with the Elongated Man. The Question's series by Denny O'Neil presented Pseudoderm as Rodor's attempt to build an artificial skin for humanitarian purposes.

The Question's specialized belt-buckle, which releases a gas that binds his mask and temporarily recolors his garb, is similar to that of the Spider-Man villain Chameleon. In his initial appearances, which were drawn by Steve Ditko, the Chameleon had used a device in a belt buckle which emitted a transformation-enhancing gas. It is possible that Ditko used that as inspiration for the Question

A little lengthy but more or less explains it. Thank you wikipedia