Anytime you're coloring your hair, you're compromising the hair cuticle. Colored hair can be prone to damage so it's important to take care of it. Below are some tips that can help with that! 1. Wait at least 3 days before washing. The longer you wait, the better! I suggest waiting at least 3 days to wash your hair. This allows time for the cuticle of your hair to close, locking in those color molecules. In some cases, the cuticle of the hair may take up to 2 weeks to close.