What does a 30-volume developer do in hair coloring?

A 30-volume developer is designed to provide a significant lift when used in hair coloring processes. It contains hydrogen peroxide at a concentration of 9%, allowing it to effectively lighten the hair while also facilitating the deposit of hair color. Typically, a 30-volume developer can lift the natural hair color by approximately 3 levels, making it suitable for more dramatic changes when going from a darker to a lighter shade.

This capability makes 30-volume developer an excellent choice for various coloring techniques, especially when aiming for bright blonde shades or when significant color corrections are needed. It is essential to be cautious when using this volume, as the strength of the developer can also lead to hair damage if not used properly. Therefore, understanding the lifting ability of 30-volume developer is critical for achieving desired hair coloring results.