The standard wait time between hair colorings is four to six weeks. Since hair grows an average of a 1/2 inch per month, one month is an appropriate length of time to let hair grow before the roots become visible.
Hair color choice dictates the time necessary between hair colorings. Brighter colors, such as platinum blonde, require a shorter interval between colorings to prevent obvious roots. On the contrary, darker colors are more resilient, allowing for longer intervals between colorings before roots begin to show. If a customer is unhappy with the color she has received, hairstylists are capable of correcting the color within 24 hours.