This term refers to a specific type of hair coloring process. It combines numerical codes often used by hair color manufacturers to identify precise shades and application techniques. The numbers, such as “66” and “45,” likely denote a particular color level and tone within a professional hair color line. The “touch” component suggests a targeted application method, possibly focusing on root touch-ups or highlighting specific sections of the hair.
The value in understanding this lies in achieving predictable and repeatable results in hair coloring. Precise color formulations and application strategies are essential for maintaining hair health and desired aesthetic outcomes. Historically, the development of standardized color codes and techniques has enabled stylists to accurately reproduce colors across different clients and locations, thereby increasing client satisfaction and professional consistency.