Bleach toner hair, a variation of hair lightening, involves employing a bleach agent to achieve a lighter shade, followed by a toner to eliminate unwanted yellow or brassy undertones. The result is brighter, more vibrant locks, as seen in the recent trend of platinum blonde hair.
The technique has gained popularity due to its ability to transform hair color dramatically, offering versatility and a customizable look. Bleach toner hair has also been used throughout history, with notable examples like Marilyn Monroe's iconic blonde tresses.