I got a 12 week blowdry in my hair two weeks i returned to the hairdresser on fri to show her my hair there was no difference at all in it i had this done before so i knew how it should have looked and felt. It cost 150 euro the hairdresser said she would ring me on Sat morning No call .Today i was offered to have my hair re done i explained i didnt want this and wanted my money back . Am i entitled to this ?
You need need to have basis to show where or how having it re-done would do damage to your hair.
Herself who has her hair done every few weeks for many a year says having 2 of these blowdrys immediately after each other would not harm hair at all. (I can't comment personally as I haven't had a hairdryer near my hair for almost 30 years!)
Your best bet is to be nice a pie and have it re-done. Creating a scene will get you no-where and its unlikely that you would be entitled to a refund.
I would ask nicely for a refund stating you case clearly, if not forth coming, then ask to have the hair done but in a few weeks time. I remember a piece on Xpose about the chemicals they use (apparently there is an organic version), Id err on the side of caution.