Give about a knife tip full of foundation in a small bowl (e.g. our ceramic bowls) and pick up the powder with the Kabuki. Stir in the bowl until all the powder is in the brush. It must be worked in so well that you cannot see it particularly thick at any point of the brush. You can knock off the Kabuki several times at the edge of the bowl and then pick up again what is still crumbling out.
Because the mineral powder is so fine (without containing nanoparts), you can't use a conventional brush for it. It must be a Kabuki and it should be of good quality as you can buy it from us