To use this 3CE eye color palette, start by choosing the lighter shade as a base and apply it all over your eyelid. Then, take the darker shade and use it to line your eyes or add depth to the crease. For a more intense look, you can build up the color. When applying, use a clean eyeshadow brush for best results. Make sure to close the palette tightly after use to keep the eyeshadows fresh. Avoid getting water or moisture in the palette as it can affect the quality of the product. If you have sensitive eyes, do a patch test on your inner arm first.