The present invention generally relates to a modified hyaluronic acid (HA) and to a method for making same, more specifically to a (poly)glycerol-modified HA derivative prepared by grafting glycidol to HA. The present invention also relates to the use of the HA derivative for preparing a dermal filler composition, a hydrogel comprising cross-linked HA and the (poly)glycerol-modified HA derivative, and a method for preparing said hydrogel. Furthermore, the present invention relates to the use of the hydrogel as a cosmetic and/or aesthetic product, in particular as a dermal filler for tissue filling, replacing and/or augmenting.
