But you, when you fast, anoint your head and wash your face,
Matthew 6:17
Surrounding context
6:16 "Moreover, when you fast, do not be like the hypocrites, with a sad countenance. For they disfigure their faces that they may appear to men to be fasting. Assuredly, I say to you, they have their reward.
6:17 But you, when you fast, anoint your head and wash your face,
6:18 so that you do not appear to men to be fasting, but to your Father who is in the secret place; and your Father who sees in secret will reward you openly.