Back to Ingredient Dictionary

ACID YELLOW 73 SODIUM SALT

Description

Acid Yellow 73 Sodium Salt, also known as Fluorescein Sodium or D&C Yellow No. 8, is a synthetic fluorescent dye commonly used in cosmetic and personal care products. This water-soluble compound is primarily utilized in haircare formulations, particularly in shampoos, conditioners, and hair coloring products.

The ingredient's vibrant yellow-green hue and fluorescent properties make it an effective colorant for enhancing the visual appeal of haircare products. Its sodium salt form ensures excellent solubility and stability in aqueous solutions, allowing for uniform distribution throughout formulations.

Acid Yellow 73 Sodium Salt is approved by the FDA for use in externally applied cosmetics and drugs, including those for the hair and scalp. It is non-toxic when used at recommended concentrations and does not penetrate the skin or hair shaft significantly.

In haircare products, this dye can temporarily tint light-colored or gray hair, providing a subtle yellow tone. It may also be used to counteract unwanted brassy or orange tones in blonde or lightened hair. Additionally, its fluorescent properties can contribute to a perceived shine enhancement in hair products.