Botanical blends have long been used in traditional medicine systems to address sinus congestion. Herbs such as eucalyptus, peppermint, thyme, and elderflower are common components of these blends. Historical records from various cultures, including Traditional Chinese Medicine and Western herbalism, describe the use of these botanicals for their expectorant, anti-inflammatory, and decongestant properties. For example, steam inhalation with eucalyptus or peppermint has been used to help open nasal passages and ease breathing, while teas containing thyme or elderflower have been consumed to alleviate sinus discomfort. While some individual components of botanical blends have been studied and shown to have mild decongestant effects (e.g., menthol in peppermint providing a sensation of improved airflow), robust clinical evidence supporting the efficacy of multi-herb botanical blends for sinus congestion is limited. Most of the support for their use is rooted in traditional practice rather than rigorous scientific validation. The rating of 2 reflects the existence of some supportive preclinical and historical evidence, but a lack of high-quality clinical trials demonstrating clear benefit. Therefore, while botanical blends continue to be popular for sinus congestion based on tradition, their effectiveness remains to be conclusively established by modern research.