The present invention provides a method for the repair of subcutaneous or dermal tissue in a subject, comprising in one aspect the injection of a suspension of allogeneic dermal fibroblasts into the subject. By injecting a suspension of allogeneic cells, the invention provides, for example, long-term augmentation of the subadjacent tissue without the disadvantages that accompany the preparation and/or use of presently available materials such as autologous fibroblasts cells or collagen. According to a first aspect of the invention there is provided a method for the augmentation of subcutaneous or dermal tissue in a subject, which method comprises the steps of: (i) providing a suspension of allogeneic dermal fibroblasts and (ii) injecting an effective volume of the suspension into tissue subadjacent to the subcutaneous or dermal tissue so that the tissue is augmented. The method is preferably cosmetic.