CI 15580 (Pigment Red 51 / Helio Red RMT)

CI 15580 is EU Annex IV listed and permitted in all cosmetic product types without maximum concentration restrictions. However, it is not FDA-approved for US cosmetics, creating significant regulatory asymmetry. As an insoluble barium pigment, systemic absorption is minimal with favorable safety profile for EU-compliant applications. The barium counterion warrants monitoring for formulations applied to damaged or mucous membrane tissue. Moderate concern rating reflects regulatory asymmetry and barium-salt class considerations rather than direct toxicological evidence. The EU classifies CI 15580 (Pigment Red 51 / Helio Red RMT) as "permitted". Safety rating: MODERATE.

CI 15580 (Pigment Red 51 / Helio Red RMT) EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

CI 15580 (Pigment Red 51 / Helio Red RMT) functions as: Colorant. Synthetic azo pigment (Barium bis[4-[(2-hydroxy-1-naphthyl)azo]-2-methylbenzenesulphonate]), also known as Pigment Red 51 and Helio Red RMT. Insoluble barium-based pigment lake providing a red hue. Used in cosmetic formulations for skin, nails, and hair. As a pigment (insoluble lake), it does not dissolve in water and remains on the skin surface.. It is classified as a cosmetic ingredient in our database. CAS number: 5850-87-3.

not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.