Keratin hair extensions are a type of hair extensions that can last for 3-6 months after applied. They are called keratin hair extensions because there is a keratin bonded agent on one end of each strand of hair extensions.
Keratin hair extensions are one of the most popular types of hair extensions and they are often selected by celebrities to add length and volume to their hair.
They can also be named fusion hair extensions that are categorized as cold fusion hair extensions and thermal fusion hair extensions depending on the way of melting the keratin bonds.
This type is hair extensions, like others, is made of human hair or synthetic fiber hair. The one made of human hair is more versatile when it comes to styling, and its price is more expensive than the other. Synthetic fiber hair can not be heated because it may be melted when heated. vist:http://www.hairplusinuk.co.uk/clip-in-hair-extensions