Namely
CI 42090 is a synthetic blue dye found under other names such as Blue 1 or Blue 1 Lake (USA).
Restriction in Europe:
IV/63 (CI 42090), III/190 (Acid Blue 9; Acid Blue 9 Ammonium Salt; Acid Blue 9 Aluminum Lake) This colorant must comply with the purity criteria laid down in the Commission Directive 95/45 / EC (E 133).
Its functions (INCI)
Cosmetic colorant : Color cosmetics and / or give a color to the skin