Get the Best Curly Hair Frontals from Vanity Luxury Hair Compared to various other extensions, there are certainly more ways of hair bonding available for the curly style. You can definitely stick those of curly hair frontal extensions with a proper use of special clip or glue it with certain clips. For weak hair, clipping is indeed not a great method. But, when you actually wish to attach the extensions to the weak one, clipping is said to be only option.