Laura Mercier - This long-wear, oil-free foundation has a revolutionary bi-phase, two part formula designed to deliver the most natural looking colour and lightweight coverage. Colour true pigments rest at the bottom of the package while reflective waters (Hydro-Brilliant Technology) float to the top. Vigorously shaking the package before each use ensures the pigments blend with the reflective waters to create fresh colour every time. To activate, shake vigorously for a minimum of 10 seconds and tap several times at the end of the package by the shade label. When you release the cap you may experience a surge of product when dispensed. This is normal for a bi-phased formula. If the formula appears separated, it has not been shaken long enough. Just put the cap back on and shake more vigorously.