Blue shampoo is a hair care product specifically designed to neutralize unwanted orange or red tones in brunette hair. It contains blue or indigo-colored pigments that deposit onto the hair's surface, counteracting the warm, brassy undertones and leaving the hair looking cooler and more natural. Unlike purple shampoo, which is used on blonde or lightened hair to combat yellow tones, blue shampoo is formulated for brunettes.
How Blue Shampoo Works
The effectiveness of blue shampoo lies in color theory. Blue is the complementary color of orange, meaning they neutralize each other when mixed. The blue pigments in the shampoo bind to the hair, visually canceling out the orange tones. This results in a more even, consistent, and cooler-toned brunette shade.
Who Should Use Blue Shampoo?
- Brunettes with brassy or orange tones: If your brown hair has developed unwanted warm undertones, blue shampoo can help restore a more natural, cooler shade.
- Those who have recently lightened their hair from brunette to blonde: Blue shampoo can help balance any reddish tones that may appear after lightening.
How Often to Use Blue Shampoo
Hair stylists generally recommend using blue shampoo once a week to maintain the desired tone. Overuse can lead to a dull or overly cool appearance.
Examples of Blue Shampoos
Many brands offer blue shampoos, including Eva NYC's Brass to Sass Brunette Shampoo. Researching different brands and reading reviews can help you find a shampoo that works best for your hair type and desired result.
Key Differences from Purple Shampoo
- Target Hair Color: Blue shampoo is for brunettes, while purple shampoo is for blondes and lightened hair.
- Color Correction: Blue counteracts orange/red tones; purple counteracts yellow/brassy tones.
