Because Xylo Acino narrows the blood vessels in the nose, it helps to clear the congestion of the mucosa in the nose and the nasopharynx. Thus, when a person has a cold or rhinitis, Xylo Acino helps them breathe via their nose. The effects persist for up to ten hours and are noticeable within a few minutes. The ciliated epithelium's ability to function is unaffected by xylo Acino.