Ferric Ferrocyanide (CI 77510)

Ferric ferrocyanide (CI 77510), also known as Prussian blue, is an inorganic pigment made of iron salts that produces a deep blue color. It's used in cosmetic formulations to add color and create specific shades in decorative cosmetics.
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Ingredient Snapshot

Overview
An iron-based pigment that gives cosmetics a deep blue color.
Category
Color
Type
Pigment

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Delivers a vivid, high-impact blue for bold looks. It lays down evenly and holds crisp lines without feeling heavy.

Uses In Skincare & Cosmetics

Used in nail polish, face paints, and water-activated cake formulas to create bold blue effects.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Low irritation potential for most users. The pigment is insoluble and doesn't release free cyanide under normal cosmetic conditions. It's commonly permitted in color cosmetics, including many eye-area products, though it should be avoided on compromised skin.

Is Ferric Ferrocyanide (CI 77510) a Good Ingredient?

It earns Good marks for being an inert, chemically stable inorganic pigment: the color stays consistent, irritation is unlikely, and it holds up well across formats. What keeps it from a higher mark is that it's purely a color additive with no skin-conditioning role of its own.

Products with Ferric Ferrocyanide (CI 77510)

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