As standard, our lights are not IP rated and would not be suitable for bathroom use. If the lamps are going to be installed in an 'unzoned' area, i.e. no taps or any water jets are going near them then it should be fine.
Please see the attached guide for reference. Please consult your electrician on this as he will know where the 'unzoned' areas are (if any) in your bathroom.
As standard we would say our lamps are for domestic standard environments like living rooms or offices etc. Areas of high humidity such as bathrooms may result in some components experiencing some rust or corrosion and this would not be covered by our standard workmanship warranty.