Tea tree oil can be used to treat conditions and symptoms that affect skin, nails, and hair. It can also be used as a deodorant, insect repellent. Tea tree oil has many properties such as anti-bacterial, anti-septic, Natural Deodorant, Treat Acne. Tea tree oil can help soothe dry skin by reducing itching and irritation. Using tea tree oil on your hair may help it to stay healthy and moisturized, promoting optimal growth. Tea tree oil may help relieve inflamed skin. Tea tree oil can be used to wound healing. Tea tree oil makes a great all-purpose cleaner that also sanitize surfaces. Natural Deodorant.