Siam benzoin, derived from the resin of the Styrax tonkinensis tree, native to Southeast Asia, is a warm and sweet balsamic note in perfumery. It is often used as a base note to add depth, warmth, and a comforting sweetness to fragrances. Siam benzoin is commonly found in oriental, woody, and amber compositions, providing a rich, resinous character.

Siam benzoin has a sweet, rich, and balsamic aroma with warm, vanilla-like undertones. Its scent is resinous and smooth, with hints of caramel, honey, and a subtle smokiness. The overall profile is warm, comforting, and slightly powdery, creating an elegant, grounding depth in perfumes while enhancing their longevity and complexity.