Ferric Ferrocyanide ●
TL;DR. This ingredient is an insoluble blue inorganic colorant used to tint makeup, nail products, soaps, and some eye-area cosmetics. It provides strong, stable blue color rather than skin-care activity.
What does Ferric Ferrocyanide do in a cosmetic formula?
This ingredient is an insoluble blue inorganic colorant used to tint makeup, nail products, soaps, and some eye-area cosmetics. It provides strong, stable blue color rather than skin-care activity.
Is Ferric Ferrocyanide clean?
From a clean-beauty perspective, it is generally treated as an acceptable regulated color additive with low skin-irritation potential when purity specifications are met. The main friction points are its synthetic manufacture, color-additive restrictions by product area, and the need for tight heavy-metal and soluble impurity control.
Is Ferric Ferrocyanide sustainable?
This material is mineral-based and made through inorganic chemical processing rather than renewable agricultural sourcing. It is insoluble and persistent as a particulate pigment, but it is not considered bioaccumulative and is used at low colorant levels.
Is Ferric Ferrocyanide COSMOS-approved?
It may be allowed in COSMOS formulas as an approved inorganic colorant when it meets the standard’s purity and use-condition requirements, but it does not qualify as organic content. Its Green Chemistry profile is mixed, with good functional efficiency and stability, but nonrenewable feedstocks and no meaningful biodegradability because it is an inorganic pigment.
How does Ferric Ferrocyanide work chemically?
The molecule is a coordination-network pigment built from iron centers linked through tightly bound hexacyano complexes, which gives an intense blue shade and very low water solubility. It is typically used at low percentages for color matching, is stable across normal cosmetic pH ranges, and should be sourced to cosmetic-grade specifications to control soluble salts and trace metal impurities.
Last updated 2026-05-13