Iron Hydroxide
What is Iron Hydroxide?
Iron Hydroxide is an inorganic compound, typically ferric hydroxide (Fe(OH)3), existing as a fine yellow-to-brown powder derived from iron salts or natural mineral sources. In cosmetics, it belongs to the pigment category, commonly incorporated into makeup like foundations, lip products, and eye cosmetics to deliver earthy tones and opacity. Functionally, it imparts durable coloration resistant to light and heat, while also stabilizing formulations by inhibiting phase separation, precipitation, or oxidative changes, ensuring even texture and performance over time. Its water-insoluble nature suits emulsions, powders, and anhydrous systems, promoting smooth spreadability and adhesion without altering pH significantly. Sourced synthetically for purity or from iron-rich ores, it supports clean beauty trends due to its non-reactive, inert properties in topical applications.
Roles in Formulation
This ingredient serves the following purposes in cosmetic formulations:
Benefits
Delivers consistent, long-lasting pigmentation in color cosmetics.
Supports formulation stability to maintain product integrity.
Non-comedogenic, suitable for various skin types without pore clogging.
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 makeup seeking natural-looking, stable hues. | People with rare hypersensitivity to iron compounds. |
| Individuals with sensitive skin preferring low-irritation ingredients. | Individuals applying products to broken or irritated skin. |
| Those desiring reliable product performance over time. | Those advised by professionals to limit inorganic pigments. |
Safety Notes
- Low hazard rating indicates minimal risk in cosmetic concentrations.
- Evidence supports low potential for irritation or sensitization.
Frequently Asked Questions about Iron Hydroxide
What role does Iron Hydroxide play in cosmetics?
It acts as a colorant for pigmentation and stabilizer for consistent product performance.
Is Iron Hydroxide safe for daily use?
Yes, it carries a low safety concern rating suitable for most cosmetic applications.
Does it clog pores?
No, it has a comedogenic rating of 0, unlikely to contribute to breakouts.