3. Teak
Teak furniture can remain outdoors year in year out and is so strong that even slender parts can withstand heavy loads. Although the teak itself contains oil, it's still best to protect it. If you want it to turn grey, use wood protector, which impregnates and protects the wood. The protector is clear and allows the teak to turn grey naturally. If you would rather it keep its golden brown hue, use teak oil; read about care advice here. Brafab protects natural wild forests and only uses cultivated teak from plantations.