JUVÉDERM VOLLURE™ XC is formulated with Allergan's proprietary VYCROSS®technology, which blends different molecular weights of hyaluronic acid, contributing to the gel's duration.4† Our first product featuring VYCROSS®

JUVÉDERM VOLLURE XC™ is specifically tailored with a balance of gel firmness and low cohesivity, yielding a versatile formulation that adds subtle volume for the correction of moderate to severe facial wrinkles and folds.2,4 "What's exciting about JUVÉDERM VOLLURE™ XC is that it was shown to last up to 18 months from the initial or touch-up injection in a majority of subjects, which is the longest lasting result

The FDA Just Approved a New Filler That’s the First of Its Kind
— https://www.newbeauty.com/hottopic/blogpost/10674-fda-approves-new-filler-juvederm-vollure-xc/