I have been using Nailing Hollywood’s crystal nail file during manicures, and I’m never looking back. According to their site, it “prevent splitting and chipping by sealing the free edge of your nail. And 100% sanitzable. Also works wonders on rough cuticles, hangnails, and calluses without dangerous nipping. Nailing Hollywood Crystal Glass File effortlessly smoothes the free edge of the nail, making splitting, cracking and chipping polish a thing of the past.”. Learn more of the benefits of a crystal nail files or purchase HERE.