Women Wearing Masks in Restoration England and Restoration Theater

Fainall to Mrs. Marwood (Act II): "You have a mask, wear it a moment."  Also see O.E.D. "vizard":

a. A mask; = visor n. 2Very common from c1560 to c1700. Also †case of vizards.

α.
1558 in A. Feuillerat Documents Office of Revels Queen Elizabeth (1908) 95, i dozen of viserdes with shorte berdes.
1578 J. Lyly Euphues f. 3v, Not the carued visarde of a lewde woman, but the incarnate visage of a lasciuious wanton.
1600 T. Dekker Old Fortunatus sig. C3 (stage direct.) She [sc. Vice] and others wearing gilded visards.
1670 S. Wilson Lassels's Voy. Italy (1698) I. 93 In Modena are made the best visards for masquerades.
1733 Free-thinker (ed. 2) I. 120 The Fairy applied an enchanted Vizard to her Face.