Things to note

You may have sensitivity during and/or after treatment (typically gone within 24hrs)

Gum irritation maybe present (white spots/redness)

If you get gel on lips/hands or anywhere outside of the oral cavity there maybe some stinging & sometimes white spots will occur. If on lips for a long period of time it may blister.

If you have white spots on teeth they will illuminate. 

First hour following treatment you may have only water

First 24 hrs following treatment please avoid staining foods/drinks