Benzoin siam, a balsamic resin obtained from the tree Styrax tonkinensis and related species, has a long history of traditional use in various cultures, particularly in Southeast Asia and Europe. Historically, it has been used in incense, perfumes, and as a component in various remedies, often valued for its pleasant, sweet aroma. In the context of stress, benzoin has been incorporated into aromatherapy practices, where its calming scent is believed to promote relaxation and alleviate emotional stress or anxiety. However, these uses are primarily based on anecdotal evidence and traditional practices rather than scientific validation.

There is a lack of robust scientific studies directly investigating the effects of Benzoin siam on stress reduction in humans. No substantial clinical trials or pharmacological studies have demonstrated a clear anti-stress effect or elucidated a mechanism by which benzoin might affect psychological stress. Any relaxation benefit is most likely attributable to the general effects of pleasant aromas in aromatherapy, rather than to specific properties of benzoin itself. Therefore, while its use for stress is supported by traditional and historical use in aromatherapy, the evidence level remains low due to the absence of scientific validation.