I had lip pigmentation after zoom whitening session. how can i get rid of the pigmentation?

Sounds like some Zoom Whitening gel was exposed to your lip.  These white dots and marks should disapear in hours to a couple of days.  Vitamin E oil helps pacify the brurning and quicken the repair process.  If they are still present after three days return to  the dentist for an evaluation

The white spots on your lips are most likely a result of the whitening gel accidentally touching the lips during the procedure.  No need to worry, they'll resolve on their own in a day or two.

Regards,

Peter Mann DDS

The "white spots" on your lip will probably resolve and go away all by itself. Vit E does help it feel better.