Red 40 (CI 16035)

Red 40 (CI 16035) is a water-soluble synthetic azo dye, known as Allura Red AC, that supplies vivid red-orange color in liquid systems. It's used across cosmetics and personal care for bright hues, broad compatibility, and consistent, regulatory-compliant results.
Like this ingredient?

Snapshot

Overview
A common dye that gives cosmetics a vivid red-orange color.
Category
Color
Type
Colorant

Ratings

Overall Rating

Fair

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is Red 40 (CI 16035) a Good Ingredient?

Fair, because it gives vivid, uniform red-orange color in water-based products but delivers no direct skin benefit and can occasionally irritate or stain. Its use is regulated, with batch certification applying in some markets.

Skin Benefits

Provides a noticeable red-orange tint that disperses evenly in water-based formulas, useful for creating bright shades without affecting product texture.

Uses in Skincare & Cosmetics

Often used in toners, gels, liquid makeup, shampoos, and body washes to color aqueous systems.

Safety

Considered safe at approved concentrations with regulatory oversight. A small number of people may experience irritation or temporary staining; avoid use on broken or highly reactive skin.