Aromatherapy is a complementary therapy that uses natural plant extracts, known as essential oils, to support physical and emotional well-being. These oils are typically extracted from flowers, leaves, bark, or roots and contain concentrated aromatic compounds. Aromatherapy works primarily through the sense of smell and skin absorption. When inhaled, scent molecules travel through the nose to the brain, particularly affecting areas linked to mood, memory, and emotion, such as the limbic system. When applied to the skin through massage or diluted oils, they may also be absorbed into the bloodstream. Different essential oils are believed to have different effects; for example, lavender is often used for relaxation and sleep, while peppermint may help with alertness or headaches. Aromatherapy is commonly used to reduce stress, improve mood, promote relaxation, and support sleep. When used correctly and safely, it is generally considered a gentle and supportive complementary therapy.