Glossary · Formulation
What Is Colourant (CI Number)?
A colourant is an ingredient used to give a product its colour, declared on the label by its Colour Index number, such as CI 77891 for titanium dioxide. Cosmetic colourants are subject to permitted lists that vary by market and by whether the product contacts the eye or other sensitive areas.
Why it matters when you source
Colourants are where a formula legal in one market can be non-compliant in another, and where visual brand consistency meets a short permitted list. Ask which permitted colourant list the formula was built against for each destination.
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