The name "CI 19140" can be spotted on the ingredient lists of a variety of makeup products. But what is it? Why is it used in cosmetics?
CI 19140: What is it?
Also known as tartrazine, CI 19140 is a synthetically derived yellow azo dye approved by the European Cosmetic Regulation for use in cosmetics, but it is regulated. Indeed, in Europe, CI 19140 is subject to purity criteria specified by Commission Directive 95/45/EC. Mainly found in makeup products such as eyeshadows, foundations, lipsticks... CI 19140 is also present in hair dyes, where it is used at a maximum concentration of 0.5% in the finished cosmetic product. It can also be found under other names depending on its use: Yellow 5 Lake in the United States, FD&C Yellow No. 5 in Canada, and the E102 code in Europe as a food additive.
Chemical formula: C16H9N4Na3O9S2.
Molecular Weight: 534.3 g/mol.
Solubility: Soluble in water and glycerin.
Organoleptic properties: Fine powder in bright orange to yellow color.
Why use CI 19140 in skincare?
The CI 19140 is added to skincare products as a dye. It is used to impart a yellow hue to cosmetic products or to be combined with other coloring agents to achieve new shades.
Does it pose a health risk?
The CI 19140 poses no danger when applied topically. Reevaluations of the safety of using tartrazine have been conducted and have proven negative. However, rare cases of allergies such as eczema or hives have been reported, but it is not likely to be mutagenic or carcinogenic in humans.