Difference between drugstore and salon nail polish?

the main difference is the price. like everything else, with brand names you're buying the brand not the product. wet and wild does tend to dry out faster, and you may need to put on two coats to make it show up better, but other than that, nothing else. you can put a thinner in your nail polish or you can keep it in the fridge to keep it from drying out. nail polish that old tend to dry up anyway though. another difference is the variety of colors, but choose a color from opi and it can be found in another brand. trust me i've looked.