If your Builder Gel is lifting, it's possible that you didn't cure it for long enough. Make sure to cure for at least 60 seconds under our LED lamp (or 120 seconds under a UV lamp). You may also have left dirt or oil residue on your nail plate – make sure to properly cleanse your nails using Prep & Wipe soaked on a Lint-Free Wipe before applying your gel.
We also recommend applying a layer of Base Coat with coloured Builder Gels for better adhesion.