Increasing mature students' access to higher education (HE) is a worldwide priority. In Portugal, the 23+ policy which was launched ten years ago opened HE to these students. A critical analysis of eight years' data on the universe of mature candidates in HE in Portugal shows that this "opening" varies in inverse ratio to the social prestige of institutions and subject areas. The private polytechnics and the soft sciences display a greater receptiveness than the public universities and the hard sciences. This article demonstrates that mature students save the HEIs that are less sought-after by "traditional" students and argues for fairer access to the most prestigious HEIs and programmes.