I tend to find mine only lasts 2 or 3 days if I do it myself before it starts chipping, but it lasts longer when I have a proper manicure. I use a base coat and top coat, and tend to use Nails Inc polish. Would using more expensive polish help? Any tips for long-lasting brands or hints on some magical application technique which will help? I have no idea what my manicurist does differently from me, but it's definitely something!