Wiktionary
glossless
a. Lacking gloss (a shiny surface).
Usage examples of "glossless".
Her own lipstick stayed on, as if it were not merely a 1940s color but a 1940s formula-that glossless, cakey substance that used to cling to pillowcases, napkins, and the rims of coffee cups.
The tub, sink, and toilet were all made from a dark-brown, glossless ceramic material that resembled mud.