Black Pearl mica is a very rich, deep, and dark black color for use in soaps. Many dark micas will tend to fade once added to cold process, but this little beauty maintains its color and won't fade. Black Pearl is a great replacement for activated charcoal to achieve a very dark color in soaps.
Recommended use rate in cold and hot process soap is 1 tsp. per pound of oils. For melt and pour, the recommended use rate is .5 tsp. per pound of base. To use in bath bombs polysorbate 80 must be used. Use polysorbate at half your oils. For example, if you use three teaspoons of carrier oils, now use 3 tsp of oils and 1.5 tsp. of poly 80. If your bath bombs are too wet, decrease the amount of poly and carriers oil by the same ratio. The addition of polysorbate will prevent staining or a mica powder ring around the tub.