Massachusetts Board of Cosmetology Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

The most common type of hair color applied in salons is semi-permanent hair color. This type of coloring is popular among clients for several reasons, including its gentle formulation that does not contain ammonia, allowing it to deposit color without lifting the natural pigment. This makes it an excellent choice for those seeking a subtle change, covering greys, or enhancing existing color without the commitment of a permanent dye.

Semi-permanent hair color typically lasts for about 4 to 12 washes, making it ideal for clients who want the flexibility of changing their hair color without long-term commitments. It also offers a natural look as it fades gradually and is less damaging, appealing to individuals who prioritize hair health.

While permanent hair color is also widely used, it involves a more involved process as it can change the hair's underlying pigments and lasts significantly longer than semi-permanent options, which may lead to not being the top choice for every client. Temporary hair colors provide a highly transitory effect, intended for short-term use and not suitable for long-lasting color. Highlighting techniques usually focus on creating contrast and dimension within the hair rather than overall color change, thus falling into a different category of coloring requests.