Patchouli essential oil has aromatherapy benefits, including stress and anxiety reduction, mood elevation, and promoting relaxation and a sense of well-being. It may also help improve symptoms of certain skin conditions like acne and dermatitis and act as an antiseptic, anti-inflammatory, and insect repellent. You can use it by adding it to a diffuser, bath, or diluted massage oil, but always use a carrier oil for topical application to prevent skin irritation. 
It helps to connect the body and mind, leading to feelings of relaxation and grounding. And also stimulate the body's production of pleasure hormones like dopamine and serotonin.