What does the term "foiling" refer to in hair coloring?

Foiling is a specific technique used in hair coloring where strands of hair are separated and colored or highlighted using aluminum foil. This method allows for precise application and enables the stylist to achieve a more controlled and striking result, particularly with highlights. The foil not only prevents the dye from bleeding onto other sections of hair but also helps to insulate the color, allowing it to process effectively.

This technique is favored for its ability to create dimension and depth through multiple shades and can be tailored to suit various looks, from subtle highlights to bold contrasts. Understanding the role of foiling in hair coloring is essential for any cosmetologist looking to master various coloring techniques and provide clients with customized results.