Bubbling gel polish can indicate that oil residue has been left on the nail surface, meaning you haven’t prepped your nails properly. Always remove any dirt and oil using Prep & Wipe on a Lint-Free Wipe to cleanse your nails.
Bubbling polish can also mean you haven’t cured the polish properly. Always cure your polish for the correct amount of time (30-60 seconds under a Mylee LED lamp), and cure for longer if you’ve applied a thicker layer.