CI 45380

CI 45380, also known as Acid Red 87, is a synthetic azo dye used primarily as a cosmetic colorant. It belongs to a class of colour additives approved for use in cosmetic formulations and is employed to impart red or pink hues to skincare products. The ingredient is not naturally derived but is synthesised through chemical processes.In skincare products, CI 45380 serves purely an aesthetic function—it has no direct active benefit to the skin itself. Its role is to provide visual appeal and consistency in product appearance, helping formulations maintain their intended colour throughout their…

CI 45380 works as a colourant by absorbing and reflecting light at wavelengths that appear red or pink to the human eye. Once incorporated into a skincare formula, it disperses throughout the product to provide even colour distribution. The ingredient itself does not interact with skin biology; it remains on or in the product rather than providing therapeutic effects.

CI 45380 is used at very low concentrations in skincare formulations—typically well below 1% by weight. Because it is a cosmetic additive rather than an active ingredient, there are no specific usage guidelines for consumers. Simply use the product as directed by the manufacturer.

CI 45380 is approved for cosmetic use in most major regulatory jurisdictions. It is generally well-tolerated in topical formulations. As with any cosmetic ingredient, discontinue use if irritation occurs.