Cornrows are a traditional style of hair grooming of African origin where the hair is tightly braided very close to the scalp, using an underhand, upward motion to produce a continuous, raised row. This technique is somewhat similar to that used to produce a French braid, which is braided using an overhand, or inward, motion, and resulting in a flat braid. Cornrows can be formed, as the name implies, in simple, straight lines; or, in complicated geometric or curvilinear designs. Often favored for their easy maintenance, cornrows can be left in for weeks at a time simply by carefully washing the hair using a stocking cap or hair net and then regularly oiling the scalp and hair. Corn rowed hairstyles are often adorned with beads or cowry shells, in the African tradition. Depending on the region of the world, cornrows can be worn by either men or women.