Diffusion is not about how long a fragrance stays on your skin. It is about how the fragrance moves in the air. A fragrance with good diffusion does not stay only on the skin. It moves gently around you. People can smell it when you walk. When you enter a room. When you pass by. From my journey and experience, good diffusion feels soft and friendly. It is noticed, but it never feels too much. Some fragrances stay on the skin for many hours, But no one else can smell them. That is long-lasting, not diffusion. Diffusion happens when a fragrance is balanced. It opens nicely and moves slowly in the air. When diffusion is right, The fragrance stays close to you, but also shares itself with others. It does not shout. It walks with you and softly says, “I am here.”