CI 16035

CI 16035, also known as Allura Red AC, is a synthetic azo dye derived from petroleum-based sources. It belongs to a class of colorants approved for use in cosmetics and is employed to impart red or reddish hues to skincare products, primarily for aesthetic purposes rather than therapeutic benefit.In skincare formulations, this ingredient functions as a cosmetic colorant. It has no direct active benefit to skin health; its role is purely visual, making products more appealing to consumers. It is found in roughly 1.5% of skincare products on the market.

CI 16035 works by absorbing and reflecting light in the red spectrum, creating the visible colour in a product. The molecule itself does not penetrate or chemically interact with skin tissue in any meaningful way; it simply sits on the surface and in the product matrix to provide colour.As a synthetic azo dye, it is stable across a wide pH range and temperature range, making it reliable in various formulation types. It does not degrade or lose colour quickly, which is why synthetic colorants are preferred over natural alternatives in many commercial products.

As a colorant, CI 16035 requires no special application technique. Simply use your skincare product as you would normally. If you have a known sensitivity to synthetic dyes or azo compounds, check product labels and patch test before full application, or opt for uncoloured formulations.

CI 16035 is approved for cosmetic use and is generally well-tolerated at permitted concentrations. Those with known sensitivities to synthetic dyes or azo compounds should avoid products containing this ingredient.