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.
At a bare minimum, you must wait seven days and at least one shampooing, but your stylist may recommend waiting at least two weeks before applying color. If your hair has reacted poorly in the past to mixed perm or relaxer and dye processes, don't feel pressured to hurry -- you can go even longer between perming and coloring, and your hair will be all the healthier for it.