What should I do if the nail polish doesn’t stick to the nail surface and keeps falling off?

It may be that the nail surface is not thoroughly cleaned or polished, resulting in grease and impurities affecting adhesion. It is recommended to clean the nail surface with nail polish remover first, gently polish to remove grease and dead skin, and then apply primer to increase adhesion. When applying nail polish, avoid applying too thick a layer. Each layer should be exposed to a lamp or dried, and finally apply a sealant to seal and protect. This can effectively improve durability and reduce shedding.