Here are some things to try for swelling after an IPL treatmemt:

• Ice, ice and more ice right after the treatment.  They should give you several ice/cold packs so you can sit for 20-30 minutes, even if it's just in the waiting room, with the ice on your face.
• Try taking an antihistamine like the non prescription Claritin (ask your doctor if it's safe for you), for 2-3 days prior to the treatment.
• Ask your dermatologist if you can take anti-inflammatories right afterwards.  Some doctors don't like you to use them right after the treatment.
• Keep your salt intake low, drink lots of water and sleep with your head a little higher the first few nights afterwards.

 Good luck!  Dr. I