The present application relates to a steam generator (40) for a steaming device (10) comprising a chamber (42) having a base (46) and a liquid receiving space (47) above the base (46), a heater (50) for heating water in the liquid receiving space (47), a steam outlet (49), and a foaming restriction barrier (70) disposed between the steam outlet (49) and the base (46). The foaming restriction barrier (70) comprises a first barrier section (71) spaced from the liquid receiving space (47) between the steam outlet (49) and the liquid receiving space (47). The first barrier section (71) is configured to prevent foam from passing into the steam outlet (49). The foaming restriction barrier (70) also comprises a second barrier section (72) spaced from the first barrier section (71) between the first barrier section (71) and the liquid receiving space (47). The second barrier section (72) is configured to prevent foam from passing from the liquid receiving space (47) into an intermediate space (85) between the first and second barrier sections (71, 72). The second barrier section (72) is configured so that all the steam generated from heating water in the liquid receiving space (47) below the second barrier section (72) passes through the second barrier section (72) into the intermediate space (85) and, from the intermediate space (85) through the first barrier section (71), before passing through the steam outlet (49).