With so many people switching to sea salt, with the other two iodine sources in the American diet â milk, and bread â off the Paleo table, and with vegetables no longer delivering enough to meet our needs, iodine deficiency starts to look a lot closer to home.
Color Processing Time 101. On average, processing time for any standard hair color application is approximately 30 minutes. If youâre attempting maximum gray coverage or using a high-lift coloring product, the standard processing time typically clocks in at 45-minutes.
Ideally, however, you should wait as long as possible to wash your hair after coloring. The longer you wait, the more time the color pigment will have to soak into the hair cuticle, which will result in longer-lasting color overall.