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BASIC BLUE 9

Description

Basic Blue 9, also known as CI 42025 or Brilliant Blue FCF, is a synthetic dye widely used in the cosmetic and personal care industry, particularly in haircare products. This water-soluble compound belongs to the triarylmethane family of dyes and is characterized by its vibrant blue hue. In haircare formulations, Basic Blue 9 serves as a temporary colorant, providing a cool, blue tint to hair products such as shampoos, conditioners, and styling gels.

The ingredient is particularly effective in neutralizing unwanted yellow or brassy tones in blonde, gray, or white hair, making it a key component in many purple or blue-tinted hair products. Basic Blue 9 adheres well to hair fibers, offering a temporary color effect that gradually washes out over time. Its stability in various pH ranges and compatibility with common haircare ingredients make it a versatile choice for formulators.

While generally considered safe for cosmetic use, it's important to note that Basic Blue 9 may cause skin or scalp irritation in some individuals. As with any colorant, patch testing is recommended before widespread use, especially for those with sensitive skin or a history of allergic reactions to hair dyes.