Ci
CI 16035 (Red 40 / Allura Red AC)
CI 16035 · Red 40 · Red 40 Lake
Allura Red AC — the most widely used red colorant in food, drugs, and cosmetics. In skincare it is purely for color.
What it does
CI 16035 is the label code for Allura Red AC, a synthetic dye also called FD&C Red No. 40. The plain form colors water-based products; the Lake form works in oil-based ones.
The EU’s ingredient database lists it as a colorant (adds color).European Commission, CosIng (© European Union, CC BY 4.0) · uses put in plain words by Drop ↗
Also known as
FD&C Red No. 40
Browse all 1238 ingredients — grouped by what they do, each with whatever evidence we can cite.
This page is public so a shared ingredient card always has its sources behind it — and so you can check them without an account.
Want more like this?
Every evidence-based flag cites its source, Drop tells you when your routine is complete, and it helps you simplify — instead of selling you more. The app launches on iOS and Android in October 2026. Rate my routine works today at /rate — no sign-in.