Biosurfactants are surface-active substances synthesised by living cells. They have the properties of reducing surface tension, stabilising emulsions, promoting foaming and are generally non-toxic & biodegradable. Biosurfactants enhance the emulsification of hydrocarbons, have the potential to solubilise hydrocarbon contaminants and increase their availability for microbial degradation. Biosurfactant producing microorganisms may play an important role in the accelerated bioremediation of hydrocarbon contaminated sites. Biosurfactants are surface active substances derived from living organisms, mainly from microorganisms. At present biosurfactants are readily bio-degradable and can be produced from renewable & cheaper substrates, they might be able to replace their chemically synthesized counter parts. Among the heterogeneous group of biosurfactants, the rhamnose containing glycolipids is produced by Pseudomonas. Biosurfactant technology can be an effective and non-destructive method for bioremediation of cadmium & lead contaminated soil.