Comparing the two fragrances…

Calvin Klein

Houbigant
Obsession
Essence Rare
Only in Obsession
Shared character
Both Obsession and Essence Rare share a core of rose, bergamot, vanilla, musk, oakmoss, vetiver, green notes, and civet. They both feature floral, spicy, powdery, oriental, animal, and musky accords.
How they differ
Obsession is characterized by woody, sweet, amber, aromatic, vanilla, and warm spicy accords, utilizing notes such as jasmine, lemon, orange blossom, sandalwood, amber, mandarin, incense, coriander, peach, cedar, basil, and exotic spices. Essence Rare is defined by chypre, aldehydic, green, fresh, earthy, rose, and soapy accords, incorporating notes like geranium, tonka bean, lily of the valley, bitter orange, lily, orange, blackcurrant, aldehydes, iris, mugwort, may rose, watermelon, bourbon whiskey, zarbot, onion, green grapefruit, and orris.
Who each suits
Obsession may suit those who prefer warm, spicy, and amber-heavy oriental profiles with animalic undertones. Essence Rare may suit those who prefer fresh, green, soapy, or aldehydic chypre profiles.
More Obsession comparisons
Only in Essence Rare