A facelift restores appearance and contours of a far more youthful or fresher face, contours which were distorted by gravity pulling and loosening tissues over time. Many areas of the facial skin are improved: sagging, loose tissues of the midface, deep folds of loose epidermis at the sides of the nose and mouth, jowls or lack of definition of the jawline and surplus fat or loose pores and skin causing lack of definition in the neck area.Professor Robin Shattock of Imperial College, London, agreed safety would be key. The tricky part will be showing it really is safe and effective in humans. Related StoriesNew vaccine candidate shows great promise at fighting respiratory syncytial virusDespite reduced HIV/Helps deaths, disease still persists in South AfricaAustralian researchers find a way to improve cross-protective features of influenza A vaccineDeveloping an HIV vaccine provides up to now proved a deeply challenging task, but there were some promising results. In 2009 2009, researchers in Thailand published in the Lancet the full total outcomes of an experimental HIV vaccine, which they said decreased by nearly a third the chance of contracting HIV.