Cabinet Finish

After using a popular water based polyurethane on my own kitchen cabinets 9 years ago, I would not recommend using this type of product on painted surfaces.  It has worn off around all the handles on the most frequently used cabinets and does not put up with a good scrubbing to get off fingerprints.  Since you cannot apply an oil based polyurethane over this, the only option is to feather sand the affected areas and recoat with a similar product.