Keep flipping it upside down and right-side-up for two to three minutes.. Sometimes, this is all your nail polish needs in order to get revived. Make sure that the bottle is tightly closed, and hold it by the cap so that you don't burn your fingers. The hot water will warm the nail polish up and make it easier to spread on your nails.

TL;DR in Vietnamese:
Xoay ngược đầu lọ để hòa lẫn các hạt màu vào nhau. Ngâm lọ sơn trong nước nóng trong hai phút.