Is Rhein vegan?
Rhein
Vegan
Vegan
Vegetarian
Vegetarian
Rhein is a naturally occurring anthraquinone compound found in plants such as rhubarb and senna, also produced synthetically, used for its coloring and cosmetic properties.
| Also known as | 2-Anthracenecarboxylic acid, 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-, 2-Anthracenecarboxylic acid, 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-,Cassic Acid,Rheic Acid, Cassic Acid, Rheic Acid |
|---|---|
| INCI name | Rhein |
| CAS number | 478-43-3 |
| CosIng ID | 91886 |
| Last reviewed | 9 July 2026 |
An ingredient is considered vegan if it contains no animal-derived components at any point in its production.
Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.
