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Use the flat, stiff eyeshadow brush here. Dab it in the foil pigment. You want your brush to be damp, but not soaking wet. After wetting the brush, tap it a few times on the edge of the lid to shake off any loose bits of pigment. Start at the very center of the eyelid. You apply foil shadow using light, dabbing motions. Move from one end of the eye to the other, gently dabbing on the makeup. Be very delicate with your dabbing. You don't want to smear the foil makeup. It may take awhile to get all the makeup on neatly. You may only want a light dusting of foil makeup, in which case one or two layers will be enough. However, if you want something more dramatic, do three or four layers. Keep repeating the process of filling your brush and gently dabbing on the makeup until your makeup is as dramatic as you want it. If you want a very dramatic look, you may need to make more foil pigment at one point. Repeat the same process you used the first time to get more pigment for your eyes. Take a clean eyeshadow brush. Gently dust the outline of the foil makeup so it blends naturally into your existing eyeshadow. If you want to add in any additional colors of eye shadow, you can do so at this point. Make sure to wait until your foil makeup has dried completely to blend out the makeup.
Add the pigment to your brush. Dab the foil shadow onto the center of your lid. Repeat until you get the right effect. Blend out the foil eye shadow when you're done.