+22 How Long After Dying My Hair Can I Wash It References. This gives the hair dye enough time to fully penetrate the hair shaft. After color application wait 24 hours before washing your hair.

Web avoid washing your hair less than 24 hours before you dye it. It is also recommended to wash your dyed hair once or twice a week. Web the timing of washing your hair after dyeing depends on the type of dye used and the condition of your hair.