Is this a straightening treatment?
I have terribly curly hair and once had mine done...it was 21 years ago mind you, and looked brilliant until I washed it it was then just a terribly frizzy mess. I had it all cut off and went short
Now I swear by my GHD's my hair has been silky smooth since I started using them..the only downfall is that now its short again I keep burning my fingers and hands on the damn things
Oh by the way
edited to add that it was ages ago and that it wasn't Keratin, and I'm sure yours will lokk great when you wash it.