Thanks. I was just curious because I know that they tame the "sss" sounds but I wasn't sure about the "shh" sounds. I tried using a deesser on a vocal that I had yesterday but it didn't work out the way I wanted it to. I'm going to try a multiband compressor and see if I can get anything good to come out of it.
EDIT: Problem solved! Thank you for your help!

All it took was a multiband compressor.