The exact method of extension application used on The Swan isn’t known, but it’s most likely either bonding, cold fusion or weaves.
Bonding: Bonding is considered the “traditional” way of applying hair extensions. Sections of hair are hot glued at the root and the results last for up to four months. The cost is relatively low – about $300 – but can feel unnatural due to the glue’s stiffness.
Cold fusion: Cold fusion is a relatively new method that uses a keratin-based polymer to attach extensions to the root. The polymer is more flexible than hot glue and lasts up to six months. They can cost between $1,500 and $3,500 and are considered to be very natural looking.