Comparing the two fragrances…

Guerlain

Loewe
Samsara
Aura
Only in Samsara
Shared character
Both Samsara and Aura feature a floral profile containing jasmine, rose, iris, and musk, supported by a base of sandalwood, vanilla, amber, and tonka bean. They both utilize bergamot and lemon in their compositions.
How they differ
Samsara includes ylang-ylang, peach, carnation, green notes, and orris root. Aura is characterized by a different set of notes including gardenia, magnolia, leather, mandarin, freesia, pink pepper, lychee, violet leaves, sandalwood (Australia), raspberry, rose (Turkey), cedarwood (Atlas), cedar, balsam, red currant, wild rose, white peach, and yellow melon. Aura is described through accords of floral, woody, fruity, leather, sweet, powdery, synthetic, and soft spicy, whereas Samsara's unique notes focus on specific florals and green elements.
Who each suits
Samsara may suit those who appreciate a composition centered on sandalwood, tonka, and narcissus with a focus on restraint. Aura may suit those looking for a sophisticated profile involving leather, cedar, and fruit notes like lychee and raspberry.