Healthy nails course - (got the idea from one of the lovely geeks on here) - 6 weekly Shellac manicures - and lots of Solar Oil. I also find that the brighter the colour, the more likely they are not to bite. Have done loads of them now, and not had one person who has failed. A few have had a few "slips" where they nibble or pick, but on the whole, they have all succeeded. I think because they are only going a week before getting the Shellac redone, and the fact that they can see the progress each week, helps it work. Lots of pics on my facebook page - and photos of this particular clients nails before and after (naked) x
www.facebook.com/izzybnails