Buy Yves Saint Laurent Perfumes for Women - Rive Gauche by Yves Saint Laurent for Women 3.3 oz Eau de Toilette Spray. How to use: for long-lasting effects, the fragrance should be applied to the pulse points of the body. These include the wrist, behind the ear, the crease of the arm and knee, and the base of the throat. Pulse points give off more body heat, as this is where the blood vessels are closest to the skin, therefore constantly heating and releasing their fragrance. Also, for a long-lasting effect spr