I just had this treatment done (Coppola Keratin Treatment) on Thursday July 3rd (also on Long Island).
I cannot wait to wash my hair because it is so flat to my head and looking quite dirty.
My hair texture changed dramatically last year -- used to be a 2b -- and would wear my hair naturally over the summer months. But due to some medications, my hair is now nothing more than frizz with no wave or curl to it. If I leave it natural -- I look like a crazy person! For the past year and a half, I have been committed to blowing and flatironing every time I wash my hair.
I will post back regarding results and look forward to hearing about other experiences.
This thread was a great one so far; thanks for all the information that has been shared.