This is very true! And my doctor/surgeon said that if you use a steroid like Sensimist with the Afrin then the rebound effect isn't as severe, which appears to be someone true so far. I do a spray of Afrin, then 10 minutes later do 2 sprays of sensimist. It isn't ideal and I am switching to surgery option now that I have tested it out for a few months now and would like to make it permanent!