Activated charcoal can be used to achieve a gray to black color in soap. This charcoal is 100% USA hardwood charcoal. Activated charcoal is processed by heating to 900 degrees Celsius to burn off any other organic particulate. Mix with a bit of carrier oil before blending into soaps to help blend the color. Keep in mind that really black soaps will have a gray lather, so experiment by adding more charcoal to the base oil to gauge usage.
*This colorant can be messy! Tap the jar lightly on a flat surface several times and let it sit a minute before opening. It is a very fine powder and easily dispersed*
pH 4 - 6