rinse out
US /ˌrɪns ˈaʊt/
UK /ˌrɪns ˈaʊt/

1.
rincer, laver
to wash something quickly with water, especially to remove soap or dirt
:
•
Please rinse out the shampoo from your hair thoroughly.
Veuillez bien rincer le shampoing de vos cheveux.
•
I need to rinse out this bucket before I use it.
Je dois rincer ce seau avant de l'utiliser.