Yves Saint Laurent Forever Youth Liberator Y-Shape Concentrate is the first firming concentrate by Yves Saint Laurent, containing the Glycanactif Y™ complex, to act on the look of the Y-Shape (face, neck, décolleté) through a firming effect. Visible results: in just 7 days, skin feels suppler & looks more luminous. After 1 month, facial skin feels firmer & denser, the neck & décolleté look visibly tighter, for a more defined Y-Shape.