Aromatherapy research explores how plant-derived aromas influence human physiology and mood. Scientists examine essential oil chemistry, delivery methods, and placebo-controlled outcomes to understand mechanisms beyond tradition. Current studies investigate stress reduction, sleep quality, pain perception, and cognitive focus, combining neuroscience with clinical trials. Rigorous aromatherapy research emphasizes safety, dosage, and individual variability, helping practitioners move from anecdote to evidence while guiding consumers toward informed, responsible use of aromatic interventions across diverse populations and healthcare contexts worldwide today with growing interest.