Human evolution. Human evolution is the lengthy process of change by which people originated from apelike ancestors. Scientific evidence shows that the physical and behavioral traits shared by all people originated from apelike ancestors and evolved over a period of approximately six million years.
After rinsing out your color, apply the conditioner supplied with your kit but don't wash your hair. Wait at least a full day, preferably 48 hours, after coloring your hair before you wash it. This will also allow the hair color to completely penetrate your hair shaft. About four to six weeks after coloring your hair, you may need to touch-up your roots. When touching up the roots, don't over-color the ends. Apply conditioner to your ends and then just color the roots and top.
Whether you use a boxed hair color at home or you get it done professionally at a salon, the recommended wait time before washing your hair is 24 hours.