Provided herein is an injectable composition including, in some embodiments, a soft-tissue augmenting agent and a vehicle for the soft-tissue augmenting agent formulated for augmenting one or more soft tissues of a human or animal. Also provided herein is a soft-tissue augmenting kit including, in some embodiments, a syringe and the injectable composition formulated for augmenting one or more soft tissues of a human or animal. Also provided herein is a method for augmenting one or more soft tissues of a human or animal including, in some embodiments, injecting the injectable composition into the one or more soft tissues of the human or animal.