Let's talk about nail polish. What's the difference between base oil, bright oil, top oil and transparent nail polish?

Bright oil, seal coat and top oil are usually coated on the outermost layer to increase brightness and hardness. Base oil can generally be used as bright oil. Base oil can increase the fit of colored nail polish, such as vertical stripes on nails. Base oil can solve this visual problem. Clear oil is often the general term for all colorless nail polishes. Most of them are universal.