Back to Ingredient Dictionary

CI 20170

Description

CI 20170, also known as Acid Yellow 73 or Fluorescein, is a synthetic organic compound widely used in the cosmetic and skincare industry as a colorant and fluorescent dye. This water-soluble ingredient appears as a reddish-orange powder in its pure form but imparts a vibrant yellow hue when dissolved in solutions.

In skincare formulations, CI 20170 is primarily utilized for its coloring properties, helping to achieve desired product aesthetics. It is particularly effective in creating yellow to orange shades in various cosmetic applications, including moisturizers, serums, and cleansers. The ingredient's fluorescent nature also makes it valuable in certain diagnostic applications within dermatology.

While CI 20170 is generally considered safe for topical use, it's important to note that some individuals may experience sensitivity or allergic reactions. As with any colorant, patch testing is recommended before widespread application. Formulators should be aware of regulatory limitations on its use in different regions and product types.

CI 20170's stability in various pH environments and compatibility with common skincare ingredients make it a versatile choice for formulators seeking to enhance product appearance without compromising efficacy.