Blue 1 is a certified water-soluble cosmetic color used in cosmetic products such as creams, lotions, gels, hair products, bath products, and soaps to produce a greenish blue. Small quantities are used in formulations since it is very concentrated.
Dihydrogen (ethyl)[4-[4-[ethyl(3-sulphonatobenzyl)]amino]-2'-sulphonatobenzhydrylidene]cyclohexa-2,5-dien-1-ylidene](3-sulphonatobenzyl)ammonium, disodium salt
Acid Blue 9
Erioglaucine disodium salt