Yellow iron oxide is a naturally occurring pigment which is commonly used as a colourant in cosmetics, ceramics, paint, ink and cement. Natural Nerd's yellow iron oxide is natural and organic, rather than synthetically manufactured. Yellow iron oxide has no known skin toxicity, and is therefore safe for all skin types when used externally.
You can use yellow iron oxide to colour your homemade soap bars, bath bombs, bath salts, tinted lip balm, lip stick, lip liner, blush and eyeshadow. You can also mix yellow iron oxide with zinc oxide to create pale shades of yellow.
You only need a very small amount of yellow iron oxide to achive good colour in your products. Start with just a pinch. Always start with far less than you think you will need, and add a little more until you achieve your desired colour strength. Iron oxides are potent pigments.
Organic iron oxides are available in four colours: red, yellow, brown and black. They may be blended together in various combinations to create different colours, or blended with zinc oxide for lighter tints. The colours produced are earthy muted shades, rather than bright colours.
Yellow iron oxide is insoluble in water and oil, but it is dispersible in oil.
How to use this ingredient for best results:
- Don't inhale or ingest iron oxides. Wear a mask when handling to prevent inhaling the fine particles. For external use only.
- Soap bars: Disperse the iron oxide directly into your soaping oils with a blender, before adding the lye.
- Creams and lotions: Thoroughly blend the iron oxide into your final product after it reaches trace, or after it cools down.
- Balms and salves: Disperse the iron oxide directly into your warm oils with a blender, and once off the heat, continue stirring until the product reaches trace.
INS No. 172(iii)
CAS No. 51274-00-1
CI No. 77492
CI Pigment Yellow 42 and 43
Shelf life: Indefinite
Packaging: Home compostable wood cellulose bag that will decompose within 6 months in your home compost bin or worm farm. Paper label. The bag may be additionally sealed with a strip of clear tape to prevent spills.