Boswellia is a rare tree which contains substances promoting the human motor control system and improving the activity of joints. An extract is produced from the Indian Frankincense (Boswellia serrata) bark which is used to make incense. The Indian Frankincense grows especially in warm and dry mountainous regions of northern Africa, in Madagascar and also in India, Pakistan and Malaysia. The best quality resin is gained from trees growing on dry and stony soil. Those occurring on drier and rockier soils grow in a slower pace and produce less incense resin which is, however, of higher quality.