Basic Blue 9 (CI 52015)

Definition: Basic Blue 9, also known by its Chemical Abstracts Service (CAS) number 61-73-4, is a synthetic dye used in various applications including cosmetics. The colorant is known for its bright blue hue and is used to impart color to products.

Usage in Cosmetics: Basic Blue 9 is used as a colorant in a variety of cosmetic products such as hair dyes, eyeliners, and other makeup products to provide a desired shade or to enhance the appearance of the product. It is appreciated for its ability to provide a vibrant blue color.

Other Names: Basic Blue 9 can also be referred to as:

Skin Sensitivities and Allergies: While it's utilized for its coloring properties, Basic Blue 9 can be a cause of concern for sensitive skin individuals. It may cause skin irritations, redness, and other allergic reactions in some people, especially those with sensitive skin or existing skin conditions.

Other Risks: Apart from skin sensitivities, prolonged or excessive exposure to Basic Blue 9 may potentially lead to other adverse health effects, although the extent of these risks may vary based on concentration levels and individual susceptibilities.

Banning (California Ban) Information: According to the Assembly Bill No. 496, Chapter 441, passed in California, the use of Basic Blue 9 in cosmetics will be prohibited from January 1, 2027. This prohibition is part of a larger initiative to ban certain ingredients in cosmetic products to promote public health and safety by reducing exposure to potentially harmful substances. This ban encompasses manufacturing, selling, delivering, holding, or offering for sale of cosmetic products containing Basic Blue 9 among other listed ingredients. The act reflects a growing concern over the safety of certain ingredients used in cosmetic products, especially for individuals with sensitive skin or other health conditions.