Keratin bonds offer long-lasting lengthening and thickening of your hair without the risk of damage. These hair extensions are attached to the hair with keratin bonds that are on top of the extensions, which are fused with a hot tool. This technique requires heat for application, and visits to the salon at 3-4 mounts to maintain them. Light and unnoticeable, they allow your hair to be tied in a ponytail without any problems. The method is gaining more and more popularity because of the comfort of use, and also because of the relatively infrequent visits a salon. Brilliance Keratin hair extensions are made with 100% Remy Slavic human hair.