SOLVENT RED 23 is graded B (Low Concern) by Expert·ING, based on EU COSING Annex IV regulatory data. It is restricted under Health Canada (Restricted).

SOLVENT RED 23

1-(4-(Phenylazo)phenylazo)-2-naphthol

Safety grade: B

This colorant is permitted in EU cosmetics but restricted to certain product types or conditions of use under EU Cosmetics Regulation (EC) No 1223/2009. To be sold legally in the EU or UK, a product must meet these conditions.

Graded using: EU COSING Annex IV.

Last verified: June 9, 2026