Hair toner, a color-enhancing treatment used before and after applying brunette hair color, is a semi-permanent dye that neutralizes unwanted tones, boosts vibrancy, and adds richness to brunette shades. For instance, a violet toner can counteract brassiness in warm brunette tones.
Its relevance stems from the ability to customize and refine brunette hair color, enhancing its depth and shine. It helps correct color imbalances, provides a more even finish, and extends the longevity of hair color. Historically, hair toners evolved from traditional hair dyes to provide a gentler and more natural-looking alternative.