I have a lady trying Shellac. first time it lasted 2 days, so I reapplied. Then it lasted 4. Came to the conclusion it was possibly the hydrocortisone cream she used daily so gave her glove for when she was applying it. The shellac then lasted to over a week. I now have tried two top coats. This has been successful taking her up to at least a week and a half. BUT, the last time she had it done, the night before I was to remove and reapply she picked every nail off so that her nails were flakey. I explained the next application may not last due to this and sure enough after 3 days it has lifted. She is, understandably, wondering whether to continue and so am I. What now? Help.