You can just have gel overlays on your nails, which will smooth out the ridges and then have a pretty nail polish. It certainly stops nibbled nails - I have had mine on for over a year and do not have any problems at all.

The biggest ask is to find a good nail technician - there are a lot of cowgirls out there. Nails Inc in House of Fraser are excellent. Have mine done every 2 - 3 weeks and after years of bitten, brittle nails, they are terrific...