What should I do if my nail polish has stratified and precipitated? Can I still use it?

Don't worry, it's normal for nail polish to separate or precipitate. It doesn't mean the product is broken. Because it contains color powder and colloid, it will naturally separate and sink to the bottom after being left for a long time. Shake it before use, or stir it with a stirring stick to make it even, and you can use it normally. It will not affect the coloring and effect!