Hair extension clips at airport security?

okay so i am going on holiday on saturday and although i've worn hair extensions for the past 2 years this is the first time ive decided to wear them to travel. i was basically wondering would the metal detector go off. i think most of my clips are plastic but i know a few of them are metal so i was just wondering because im sure bobby pins don't set them off do they?Hair extension clips at airport security?
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