I also recommend choosing tape in hair extensions that are made from 100% Indian Remy Human Hair. Since they last up to 6 weeks you want quality hair that is going to look great the entire time you wear them. Your hair is parted and sectioned then layers of hair are 'sandwiched' between two wefts of the tape in extensions and then covered up by a top layer of hair..
Many Hollywood actresses are famous for using the hair weft extensions. It's true that these extensions would be the preferred way to do hair in Hollywood, as it's much faster to apply the clip in hair extensions as opposed to to use the traditional ones. It's a given fact that nearly all blockbuster movie with the last few years most likely incorporates a start that has worn one or more cheap clip in hair extensions.