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 and looks more luminous. After 1 month, facial skin feels firmer and denser, the neck and décolleté look visibly tighter, for a more defined Y-Shape. Apply morning and evening on face, neck and décolleté. Take 3 drops of the Y Shape Concentrate on your finger and dab 5 points on the face and 4 on the neck and décolleté area. Smooth it from the centre toward the outside using your fingertips.