In general, the brighter white the kaolin clay, the better quality it is considered. (annmariegianni.com)
Because green tea extract is a sort of sad ruddy brown colour, I also included a bit of green mica to give the final product a stronger green hue — I also could've used French green clay instead of white kaolin, or added something like spirulina. (humblebeeandme.com)
50g 1.76 oz granulated white sugar 10g 0.35 oz white kaolin clay or French green clay 2g 0.07 oz powdered green tea extract or matcha green tea powder (humblebeeandme.com)