Gellac was good but one of the nails got slightly smudged during the drying process and Csilla didn't notice. It was not until the end of the procedure that I saw it and showed it but she said there was nothing she could do as it was sealed (which is true as it would take to long to re-do just that one nail, and mistakes do happen!). That said the nail polish did not crack and has lasted. Gellac on my foot nails were done perfectly. Would go again.