Article last updated: October 15, 2024
Pigment Blue 15, also known as [29H,31H-Phthalocyaninato(2-)-N29,N30,N31,N32] copper or CI 74160, is a vibrant blue pigment commonly used in the cosmetic industry, particularly for hair dyeing. This compound is part of the phthalocyanine family, which are synthetic pigments known for their intense color and stability. The “copper” in its name refers to the central metal ion in its chemical structure, which is coordinated with nitrogen atoms in a large, planar ring system.
The history of Pigment Blue 15 dates back to the early 20th century when phthalocyanine pigments were first discovered. Initially, these pigments found applications in industrial coatings and inks due to their excellent lightfastness and chemical resistance. Over time, their use expanded into the cosmetic sector, where their vibrant and long-lasting color properties made them ideal for hair dyes.
The production of Pigment Blue 15 involves a complex chemical synthesis. It typically starts with the reaction of phthalic anhydride with urea and a copper salt, such as copper chloride. This reaction forms the phthalocyanine ring system with copper at its core. The resulting compound is then purified and processed into a fine powder that can be easily incorporated into various cosmetic formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Pigment Blue 15:
Pigment Blue 15 is primarily used as a hair dye. This means it is an ingredient that can impart a blue color to hair. When used in hair dye formulations, it helps to achieve vibrant and long-lasting blue hues. This can be particularly appealing for those looking to make a bold fashion statement or add a unique touch to their hair color.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of Pigment Blue 15 during pregnancy and breastfeeding are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice.
While Pigment Blue 15 is generally considered safe for use in cosmetics, it is important to be aware of potential side effects from its topical application:
Adverse reactions to Pigment Blue 15 are relatively uncommon, but it is always recommended to perform a patch test before widespread usage to ensure there is no adverse reaction.
In terms of comedogenicity, Pigment Blue 15 has a rating of 1 on a scale of 0 (totally non-comedogenic) to 5 (highly comedogenic). This means it is unlikely to clog pores and is generally suitable for individuals prone to acne, blemishes, or breakouts.
