1-Naphthol vs Ci77491 (Iron Oxides)
1-Naphthol and Ci77491 (Iron Oxides) are both added colour ingredients. 1-Naphthol is found in 1 product while Ci77491 (Iron Oxides) appears in 1, making 1-Naphthol the more widely used option.
1-Naphthol
Added colour
Ci77491 (Iron Oxides)
Colour pigment