Nail care for nail protection!

I've been wearing nail polish since I was young, so my nails have developed a lot of grain and don't look pretty! Ugh. But I heard that applying a top coat protects your nails, helps the polish apply better, adheres better, and improves longevity, so I've been using it. Since then, I think my nails feel better than when I didn't. They feel much healthier, so I highly recommend you all make sure to apply it before putting on your nail polish.