In hair color terminologies, what does "cool" refer to?

In hair color terminology, "cool" refers specifically to shades that have blue, green, or violet undertones. This classification is important because cool colors tend to produce a more subdued and calming effect, often appearing more sophisticated or modern compared to warm colors. Hair colors with cool undertones can include various shades such as ash blondes, cool browns, and platinum blondes.

Understanding this concept is crucial for hair colorists and clients alike, as it helps in selecting the most flattering hair color based on skin tone and personal preferences. For example, people with cool skin tones often look best in hair colors that are also cool, while those with warm skin tones might prefer shades with warmer undertones. This knowledge allows for better customization in hair coloring, ensuring that the final result enhances the client's overall appearance.