ru·be·fa·cient 
(r′bə-fāshənt)
(r′bə-fāshənt)adj.
Producing redness, as of the skin.
n.
A substance that irritates the skin, causing redness.
[Latin rubefaciēns, rubefacient-, present participle of rubefacere, to make red : rubeus, red; see reudh- in the Appendix of Indo-European roots + facere, to make; see dhē- in the Appendix of Indo-European roots.]
ru′be·faction (-făkshən) n.