abluent

[ab-loo-uh nt] /ˈæb lu ənt/
adjective
1.
serving to cleanse.
noun
2.
a cleansing agent.
Origin
1745-55; < Latin abluent- (stem of abluēns, present participle of abluere to wash away), equivalent to ab- ab- + -lū- combining form of lavere to wash + -ent -ent