Oxford Dictionary
lustreless
lustreless |ˈlʌstələs |(US lusterless ) ▶adjective not bright or shiny; dull: her uncombed, lustreless black hair.
Oxford Thesaurus
lustreless
lustreless adjective a pallid face and lustreless eyes | lustreless black boots: dull, lacklustre, matt, unburnished, unpolished, tarnished, dingy, dim, dark, drab. ANTONYMS lustrous, bright.