2. Nail reinforcement glue is applied after the base oil and before the nail polish glue. After applying the reinforcing glue, it is necessary to irradiate it with a lamp for two minutes, and then apply nail polish glue to increase the thickness of the nail, which can also prevent the nail from cracking and breaking. Therefore, girls can also buy reinforcing glue to add a protective layer to their nails when they do their own manicure. This protective layer can also prevent nails from being scratched and scraped off. You can coat a layer of reinforcement glue on a layer of sequins, then coat reinforcement glue on sequins, and so on.