Mix and match for your own personalized duo: blush, highlighter, or brush - the perfect refillable multitasker that simplifies your daily makeup routine. The case is lightweight and durable, made from high-quality aluminum. This product is the case only and does not include Blush & Glow refills. To insert the refills, leave the transparent protective caps on the refills and press them into the case until you hear a “click.” This ensures that they are securely locked in place. After insertion, remove the protective caps and replace them with the white caps.