One of the most common misconceptions and incorrect practices about putting foundations is that you do not have to properly prepare your skin since you will eventually cover it with foundation. This practice is entirely wrong. Your Chanel foundation will not blend if you do not prepare your face properly. It is the same for all makeup products, so you must invest in a simple yet effective skincare routine. Also, you have to wait when applying multiple makeup products to your face. It will help you avoid product piling on your face.