Is it safe to get a chemical hair treatment before and after LASIK surgery?

I intend to get the Brazilian Blowout hair treatment soon, but want to make sure it doesn't affect the results of my LASIK procedure or the healing process. Unfortunately the Brazilian Blowout involves a barrage of chemicals that usually sting my eyes while I'm getting it, and also up to a few days after when I shower and the chemicals get released in the air. How soon before and after surgery is it safe to get it? (Note: the treatment involves more chemicals than hair coloring).