The patchouli is more bactericidal than the tea tree, but the irritation is also higher. It must be diluted to contact the skin. There is no shelf life, and the longer the irritation, the lower the irritation, so this is an essential oil that does not matter for long. Will be more yellow and sticky. It has anti-aging effects on skin cells, and is widely used in anti-wrinkle products. It can also help heal scars, antibacterial, reduce redness and itching, and the effect is quite diverse. The smell of patchouli is a deep and simple bass note, which can stabilize the mood and calm the nerves, so for insomnia, headache, gastrointestinal disorders, use it to relieve discomfort. Used to expand incense can dissolve the inner feeling of emptiness and loneliness. It is also one of the ingredients of meditation incense.