Back to Ingredient Dictionary

HC RED NO. 18

Description

HC Red No. 18, also known as 1-Methoxy-3-(β-hydroxyethylamino)-4-nitrobenzene, is a synthetic hair dye molecule primarily used in semi-permanent and temporary hair coloring products. This vibrant red pigment is designed to impart a rich, warm hue to hair without the need for oxidative processing.

HC Red No. 18 is classified as a nitro dye, characterized by its ability to penetrate the hair shaft and deposit color molecules without causing significant damage to the hair structure. Its molecular size allows for effective color retention while still being small enough to wash out gradually over time. This attribute makes it particularly suitable for consumers seeking temporary color changes or those who prefer to experiment with hair color without long-term commitment.

The dye exhibits good stability in various hair care formulations and demonstrates compatibility with other common hair coloring agents. It is often combined with other HC dyes to create custom shades and tones. While HC Red No. 18 provides vibrant coloration, it is important to note that, like other semi-permanent dyes, its longevity can be affected by factors such as hair porosity, frequency of washing, and exposure to UV light.