Artemisia Vulgaris is a hardy plant that grows in the lower highlands of northern Vietnam. While some of the sources for Tonkin Natural Solutions' Green oil are actively cultivated in sustainable manners, much of it is foraged in the highlands by indigenous minority groups. The primary usage of Artemisia Vulgaris in Vietnam has traditionally been for pain relief, often through various means of moxibustion. The distillation methods used by Tonkin Natural Solutions result in pure oils that are combined with natural emollients to produce a quick absorbing fast drying liquid, applied externally.