Im going to book on a hair extension course so I have been doing my research. what I wanted to know is how long do the extnesions last? on variuos websites it varies from 3 months to about 12 months, but surely they would have to be repositiioned during this time? are they saying that this is how long the hair will last before it looks really bad? From what i have read, once the extnesions have been put in, then about 6-8 weeks you get them to come in for maintenance, replace any bonds, make sure no matting etc. Then after 3 months they should be ready to come out.............or should they? Logic tells me this is when you would offer a reposition appointment? how much would you charge for this? I am guessing this will take double the amount of time it took to put them in? (as you will be removing and replacing). do you find people just get them put in for the 3 months then start again with al new hair?