Customer service: It may cause an allergic reaction to skin contact in rare cases. A Skin Test before use is necessary. Stop using it immediately once you feel uncomfortable! Please feel free to contact us if you have any problems. We are more than happy to help you out. Compatible with all products: They can be used with all gel nail polish, acrylic powder, extension gel, dip powder, acrylic nail supplies, and liquid systems, as well as any artificial nail art. Natural nail tech supplies: This set is made from natural ingredients. The ACID-FREE formula does not burn or irritate nails. The healthy and environmentally friendly formula is non-toxic to the body. Strong effect: The nail prep kit helps clean the nail surface, used with the newly upgraded gel base and top coat set can protect the nail surface keep them shiny, and prevent the nail art from discoloring. Nail tech must haves for nail art: The package includes 1*10 ml gel base coat + 1*10 ml glossy top coat + 1*10 ml nail prep dehydrator. Using this Nail Starter Kit can extend the effect of nail products, and keep your nail art long-lasting for over 28 days.