Estee Lauder Foundation Brush The ultimate foundation brush for a flawless finish every time. Provides smooth, even application. Special design makes blending easy and gives you a natural, seamless look. Perfect for use with liquid or cream foundation. All Estee Lauder brushes are composed of the finest quality materials and are designed to ensure the highest level of makeup artistry. How to use: To apply liquid foundation, pour a small amount onto back of hand.