OMG! I must have this! bareMinerals Perfecting Face Brush is engineered with a unique fluid reservoir, allowing for no-mess foundation application and flawless makeup coverage for skin that glows. The tool is even designed to let you adjust your foundation coverage for seamless coverage and expert control. How to use: Drop 1-2 drops of foundation into the brush reservoir. Buff onto skin in circular motions. Add more drops of foundation to increase coverage.