Yves Saint Laurent Kouros (M) Edt 50Ml The base notes are the foundation of the fragrance, providing long-lasting depth and richness. In Kouros, the base notes are particularly prominent and include: Oakmoss: A classic chypre note that adds a touch of earthiness and greenness.Patchouli: A woody and earthy note that adds depth and complexity.Leather: A sensual and masculine note that enhances the overall richness of the fragrance.