What process is used to change hair color without bleach?

The process used to change hair color without bleach is tinting. Tinting refers specifically to the technique of applying colored products to hair that can enhance or change the current color without the use of bleach, which removes pigment. This method typically uses semi-permanent or permanent hair color formulated to deposit color into the hair strands.

Tinting can result in a variety of color effects, such as enriching the hair's natural color or covering gray hair, while preserving the hair's integrity by not stripping away its natural pigment. This makes it a suitable choice for clients seeking to change their hair color in a less aggressive manner compared to bleaching.

In contrast, dyeing often implies a more generalized application of color that can include both tinting and lightening methods. Highlighting involves lightening specific sections of hair to create dimension and contrast, while lifting specifically refers to the process of removing pigment from the hair, usually with the help of bleach. Therefore, tinting stands out as the method that achieves hair color change without the use of bleach.