cowash

or co-wash

[ koh-wosh, ‐wawsh ]
/ ˈkoʊˌwɒʃ, ‐ˌwɔʃ /

verb (used with or without object)

to wash the hair with a cleansing conditioner instead of shampoo.

noun

a cleansing conditioner for the hair.
the act of washing the hair with a cleansing conditioner.

Origin of cowash

First recorded in 2010–15; co(nditioner-only) + wash