Is HC Blue No. 18 vegan?
HC Blue No. 18
Vegan
Vegan
Vegetarian
Vegetarian
HC Blue No. 18 is a synthetic organic compound used as a direct dye in hair coloring products, chemically a benzisothiazole sulfonamide azo compound.
| Also known as | 1166834-57-6, 2,1-Benzisothiazole-5-sulfonamide, 3-[(3-chloro-4-hydroxyphenyl)azo]-, 2,1-Benzisothiazole-5-sulfonamide, 3-[(3-chloro-4-hydroxyphenyl)azo]-,2,1-Benzisothiazole-5-sulfonamide, 3-[(1E)-2-(3-chloro-4-hydroxyphenyl)diazenyl]-,3-[(E)-(3-chloro-4-hydroxyphenyl)diazenyl]-2,1-benzisothiazole-5-sulfonamide, 3-[(E)-(3-chloro-4-hydroxyphenyl)diazenyl]-2,1-benzisothiazole-5-sulfonamide, HC Blue No 18 |
|---|---|
| INCI name | HC Blue No. 18 |
| CAS number | 852356-91-3 |
| CosIng ID | 91428 |
| Last reviewed | 4 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.
