Back to Ingredient Dictionary

CI 40215

Description

CI 40215, also known as Acid Yellow 73 or Brilliant Yellow, is a synthetic azo dye commonly used in cosmetic and personal care products. This water-soluble colorant imparts a bright yellow hue to various formulations, including skincare products, hair dyes, and makeup.

The dye is approved for use in cosmetics by regulatory bodies in many countries, including the European Union and the United States. CI 40215 is particularly valued for its stability in a wide range of pH levels and its resistance to light and heat, making it suitable for long-lasting color in products exposed to various environmental conditions.

In skincare formulations, CI 40215 is typically used in small concentrations to achieve the desired color intensity without compromising the product's efficacy or safety profile. It is often combined with other colorants to create custom shades and hues.

While generally considered safe for topical use, some individuals may experience sensitivity or allergic reactions to azo dyes. As with any cosmetic ingredient, patch testing is recommended for those with sensitive skin or a history of allergic reactions to cosmetic products.