Keshifun 22 carat gold powder is specially designed for kintsugi. It is one of the finest gold powders you can find, it contains 91.6% pure gold.
 
It is important to note that this powder should not be buffed, this could alter its appearance and finish. As a replacement for polishing, you can use a tool calledtaiki which will make the surface shine more.
 
Note that it is essential to handle gold powder with care when using a mask because of its extreme fineness and lightness.