Calvin Klein Obsession Women Edp 100Ml The heart notes are the central scents that emerge after the top notes evaporate. In Obsession, you might find notes like jasmine, orange blossom, and spices. These floral and spicy notes give the fragrance depth and complexity.The base notes are the long-lasting scents that remain after the fragrance has dried down. Obsession typically features base notes such as vanilla, amber, and sandalwood. These rich and woody notes create a warm and sensual foundation for the fragrance.