Let it sit for a few minutes. Consistency should be that of toothpaste, not to thick, not to thin. Let it sit for several hours or overnight before using, keeping it in an airtight container. You may need to add a little more water or oil later as powder sits and absorbs the water. Just remember smooth toothpaste.
Some people like to squeeze the tube paste into an applicator bottle.
If using a stencil, spread paste on the design and let dye paste set. Do not lift stencil while paste is drying. Dab with oil several times while the paste stains your skin. Let design dry for awhile, thicker areas will take longer. Dab area with oil to keep moist, help dye penetrate and make a deeper color.