deluster
/dɪˈluːstər/Definitions
1. verb
to remove or reduce the luster or shine from something, especially by dulling or matting the surface
“The fabric was delustered to prevent glare in the photographs.”
2. noun
a substance or treatment that removes or reduces the luster or shine from something
“The delusterer was applied to the car’s paint to give it a matte finish.”