Elevage Glu is a refining agent able to regulate the redox state of wines. Its utilization enables to preserve the grape original varietal aromas and to avoid the occurrence of post-fermentative reductions. The characteristics of Elevage Glu come from its ability to intervene at the origin of the redox processes of wines, blocking and inactivating the first oxidized molecules, that is the quinone forms of cinnamic acids and catechins.