1. A method of using an alginate gel as a tissue bulking material in an individual comprising dispensing a self gelling alginate dispersion within an individual; wherein said self gelling alginate dispersion is dispensed within an individual in a process comprising:
a) forming a dispersion by mixing i) a solution comprising a soluble alginate with an insoluble alginate/gelling ion particles or ii) immediately soluble alginate, insoluble alginate/gelling ion particles and a solvent, and
b) dispensing the dispersion in an individual whereby the dispersion forms an alginate gel matrix.