Cool tones are an excellent choice for light-brown or blonde hair. This type of colour is also perfect for highlights and balayage. You can achieve a natural-looking colour by working with a professional hair colourist. These shades are ideal for both men and women. Here are some tips for choosing a cool tone. Let your stylist know what you’d like to achieve with your new hair color. By following these guidelines, you’ll have a gorgeous head of hair in no time.