has anyone tried this and if so, were you happy with it, had any side effects etc? i had one yesterday. the ends still seem a bit frizzy on one side this morning so im going back tomorrow, maybe she will redo it or put more serum on the ends and lock it in. i feel really weird since having it done, i had a chest pain while i sat there having it done then i felt really spaced out and headachey after it and still do today. ive looked it up and it says keratin is a natural product. maybe im just feeling under the weather and its a coincidence. i was running around all day yesterday admittedly and felt on edge, could be stress. got a lot happening at the moment.