The BASIS AND MUST-HAVE OF NAIL ART: To create a foundation, using this duo set to prepare the nail plate is the most crucial step in any professional manicure! can clean the nail surface and helps to bond the natural nails and mani products. can enhance the stickiness of the nail surface, and help the mani products not lift and be long-lasting for more than 28 days. HEALTHY INGREDIENTS: The formula of ACID-FREE is safer for nails, without burning sensations and irritating odors. They are great for healthy or sensitive skin. COMPATIBLE WITH ALL MANI-PRODUCTS: They can use with all gel nails, acrylic powder, extension gel, dip powder, cuticle oil, acrylic nail supplies, and liquid systems, as well as any artificial nail art. And works great with all leading professional nail care brands in the market. WARNING: Due to the collision in transportation, the product may be leaked. If you receive a leaked or empty product, please don't worry about it. Please contact us and we will solve it for you the first time.