Ferric Ferrocyanide
What is Ferric Ferrocyanide?
Ferric Ferrocyanide is a synthetic inorganic compound formed from iron and cyanide ions in a stable complex, appearing as a deep blue powder. It belongs to the category of pigments and dyes in cosmetics, primarily employed in eye-area products like eyeshadows, eyeliners, and mascaras. Functionally, it imparts intense blue coloration and opacity by dispersing evenly in formulations without dissolving, ensuring uniform shade distribution and resistance to fading from light or sweat. Its insolubility prevents systemic absorption through the skin, making it suitable for topical use. Regulatory bodies approve it for cosmetic applications due to its inert nature and lack of reactivity in typical product matrices.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Delivers consistent, vibrant blue shades across product batches.
Provides long-wear color stability in eye makeup formulations.
Non-comedogenic, minimizing pore clogging for clearer skin.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Users of colored cosmetics seeking reliable pigmentation. | Those with rare allergies to iron-based compounds. |
| Individuals with acne-prone skin due to zero comedogenic rating. | Individuals preferring only plant-derived colorants. |
| People desiring fade-resistant eye makeup performance. | Users sensitive to inorganic pigments in eye products. |
Safety Notes
- Rated low to moderate concern by hazard assessments, with minimal skin absorption.
- Approved for cosmetic use by regulatory authorities as a non-reactive color additive.
Frequently Asked Questions about Ferric Ferrocyanide
What products commonly contain Ferric Ferrocyanide?
Primarily eye shadows, eyeliners, and mascaras for blue pigmentation.
Is Ferric Ferrocyanide safe for skin?
Yes, it's approved for cosmetics with low absorption and hazard ratings.
Does it clog pores?
No, it has a comedogenic rating of zero.