Getting a GK treatment can take 1.5 to 2 hours depending on a person’s length and amount of hair. If you do color your hair, it is recommended to get the GK after your hair color service. We do offer a quick alternative to the GK which is called a GK fast dry. This can be added on to your haircut or hair color service as it only requires us to spray a product into the hair, dry it and quickly flat iron. Although the fast dry only lasts for 10 washes, it is quick and also a great way to explore the benefits of GK before getting the big service done.