
Hair color products, also known as hair colorant or hair dye, fall under the broad category of hair care products. Hair color products contribute to more than 25% of the global hair care revenue. Though hair color products are available in various compositions, ingredients, and colors, the hair color products are categorized into four different variants based on category: permanent hair color, semi-permanent hair color, temporary hair color, and hair highlights and bleach. The novelty hair color is a part of the global hair color space. Some specific colors such as purple, green, blue, orange, pink, red, and yellow are considered as novelty colors and these colors are very unusual to be applied in the hair coloring process.