Our micas have been tested on Cold processed soap and are stable. They have been tested at a rate of 0.5g mica to 100g soap batter to achieve medium colouration. For more intense colours, particularly pinks to reds, higher ratios can be used. There might be some bleeding with some colours if too much is used.
To use in soap: Disperse (an equivalent of ) 0.5g of mica the same volume of light oil. Add dispersed mica into soap after trace is reached.
Our micas have been tested on cold processed soap only so far.