Hair coloring techniques refer to various methods used to change the color of hair. Common techniques include highlights, where lighter strands are added to create dimension, and lowlights, which involve adding darker shades for depth. Another popular method is balayage, a freehand technique that results in a natural, sun-kissed look. Additionally, ombre is a technique that blends two colors, typically darker at the roots and lighter at the ends. Foiling is another method where color is applied to sections of hair wrapped in foil, allowing for precise application. Each technique offers unique results, catering to different styles and preferences.