My daughter was in despair over her nails. I think the problem happened after a very inexperienced "beautician" tried to remove her old Shellac polish and went at it scraping for nearly half an hour to get it off. This left her with peeling nails that split all the way down to the base. She is getting married soon and was in despair. She dispensed with all polish and tried Sally Hansen nail rehab and Orly Grow Aid. To no avail.Then a friend suggested Opi Nail Envy. Happy to say that her nails are recovering and growing well...at last !! Hope this helps someone.