Jojoba oil is derived from the seeds of the jojoba shrub, a perennial native to the North American deserts. The oil accounts for 50% of the jojoba seed and is extracted by cold-pressing, a process that helps maintain the rich nutritional value of the oil. Jojoba oil and wax are produced from the seeds and used for medicine. Jojoba is applied directly to the skin for acne, psoriasis, sunburn, and chapped skin. It is also used topically to encourage the regrowth of hair in people who are balding.