15W Ivory: Very fair with warm undertones. Apply Smooth Priming Serum on clean skin to achieve a smooth, even base for makeup application; then moisturize and apply mineral foundation. Keep in mind, that "less is more", since our Loose Mineral Foundation is very concentrated. A jar typically lasts someone 4-6 months with daily application. Use a Flat Top Foundation Brush for best results. Tap a small amount of minerals into the cap, dip in the brush, and buff onto the skin in a circular motion. Ingredients: Mica, Titanium Dioxide (CI77891), Zinc Oxide, Silica, Iron Oxides (CI77491,CI77492, CI77499)