?CUSTOMER SERVICE?: It may cause an allergic reaction to skin contact in rare cases. A Skin Test before use is necessary. Stop using immediately once feeling uncomfortable! Please feel free to contact us if you meet any problems. We are more than happy to help you out. ?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. ?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. ?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. ?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! The NAIL PREP DEHYDRATOR can clean the nail surface and helps to bond the natural nails and mani products. The NAIL PRIMER can enhance the stickiness of the nail surface, and help the mani products not lift and be long-lasting for more than 28 days.