The aim of the study is to compare the efficacy and safety of Eutrophill (polyacrylamid gel), a resorbable filler compound versus Newfill( polylactic acid) in a comparative, randomised, multicenter trial and patient-blinded study, in the treatment of facial lipoatrophy in HIV-infected patients, one year after the first injection (week 48). The efficacy will be assessed by measuring the median self-perception index of the patients with a visual analogue scale (VAS index).The study will compare between treatments, at week 48, week 72 and week 96 versus baseline :the median increase of the VAS index, the rate of treatment failure, the scores of 2 patients-questionnaires (a-NBC and MOS-HIV),the ordering of digital photographs,the median increase of the facial dermal thickness of the cheek and the dermal skin fold as assessed by a Skinfold Caliper.