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BASIC BROWN 4

Description

Basic Brown 4, also known as 2-[(4-Aminophenyl)azo]-1,3-dimethyl-1H-imidazolium chloride, is a synthetic hair dye widely used in the cosmetic industry. This semi-permanent colorant belongs to the azo dye family and is particularly effective in imparting warm brown hues to hair. Its molecular structure allows for efficient penetration of the hair shaft, resulting in longer-lasting color compared to temporary dyes.

The dye molecule is relatively small, enabling it to diffuse into the hair cortex and bond with keratin proteins. This interaction provides resistance to washing and environmental factors, typically maintaining color vibrancy for 4-6 weeks. Basic Brown 4 is often combined with other dyes to create a range of brown shades and can be used on various hair types and textures.

While effective, it's important to note that Basic Brown 4, like other synthetic dyes, may cause allergic reactions in some individuals. Patch testing is recommended before use. The dye's performance can be influenced by factors such as hair porosity, previous chemical treatments, and the natural underlying pigment of the hair.