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CI 42090

Description

CI 42090, also known as FD&C Blue No. 1 or Brilliant Blue FCF, is a synthetic colorant widely used in cosmetics and personal care products. This water-soluble dye imparts a vibrant blue hue to various formulations, including skincare products, makeup, and hair care items.

As a triphenylmethane dye, CI 42090 offers excellent color stability and resistance to light, pH changes, and temperature fluctuations. These properties make it a reliable choice for formulators seeking long-lasting color in their products. The ingredient is approved by the FDA for use in cosmetics and is considered safe when used as directed.

In skincare formulations, CI 42090 is typically used in small concentrations to achieve the desired color effect without compromising the product's efficacy or safety profile. It is often combined with other colorants to create custom shades and enhance product aesthetics.

While generally well-tolerated, some individuals may experience sensitivity to this dye. As with any cosmetic ingredient, patch testing is recommended for those with sensitive skin or a history of allergic reactions. Formulators should also be aware of regulatory limitations on its use in different regions and product categories.