Cajeput oil is an essential oil extracted from the leaves, twigs, and branches of the Cajeput tree, also known as Melaleuca cajuputi, native to Southeast Asia. It has a fresh, medicinal, and slightly fruity aroma. It is known for its anti-inflammatory, antiseptic and analgesic properties, and has been traditionally used to help with pain relief, respiratory issues, and skin conditions. Cajeput oil is also used in aromatherapy and massage, it's known for its ability to soothe sore muscles, and it's also used as an ingredient in some cleaning products and insect repellents. It is considered safe for most people when used topically and in small amounts when used internally. However, it's always best to consult with a healthcare professional before using it internally, as large doses can cause skin irritation and other adverse effects.