I had IPL to deal with a lot of sun damage and discoloration I had.
I had a pretty extreme response - lots of swelling and the amount of pigmentation that came to the surface made it impossible for me to leave the house! It took about 10 days before I was healed enough that I could cover with makeup and not get a lot of sideways glances.
14 days post procedure, I am thrilled with the results. My sun damage is gone and my skin is smooth with invisible pores. I would definitely do it again, however I was completely unprepared by the amount of downtime I experienced. I would just caution anyone considering IPL to be prepared for that possibility.
There are also a lot of horror stories out there - I would only do this with a medical doctor who has a lot of experience working with IPL.