The standard time to wait between hair colorings is four to six weeks. Because hair grows an average of 1/2 inch per month, this frequency allows for a new coloring before roots become highly visible. If a little root growth is not a problem, this interval can be stretched out to as much as six or eight weeks between colorings.
Depending on the natural color and the dyed color of the hair, the interval may be less or more to maintain a cohesively colored look. Dying the hair more frequently than once per month can lead to a lot of undesirable consequences, such as breakage, splitting, tangling and a straw-like texture. However, if the color is completely undesirable, a professional salon may be able to make some changes to it before the one month wait is complete.
Brighter colors, such as platinum blond and all shades of red, require more frequent maintenance than most shades of brown. Because these colors are more likely to show growth and distinct changes in color on the scalp as new hair grows, these high-maintenance colors require dying every four to six weeks. For less maintenance, choose darker shades of brown, or speak with a hairstylist about demi-permanent or semi-permanent solutions that fade away slowly and allow for a longer time between dying sessions.