Pi Cologne by Givenchy 100 ml Eau De Toilette Spray for Men. Pi cologne by givenchy, launched by the design house of givenchy in 1999, pi is classified as a refined, oriental, woody fragrance. This masculine scent possesses a blend of a fresh scent of light citrus, in combination with a strong woodsy aroma, with a low note of vanilla. It is recommended for evening wear. all products are original, authentic name brands. We do not sell knockoffs or imitations.