Trending Yarn Cornrows Needle And Thread Cornrows / Cornrows or canerows are a style of hair braiding in which the hair is braided very close to the scalp, using an underhand, upward motion to make a continuous, raised row. See more of darn yarn needles and thread on facebook. Yarn Cornrows Needle And Thread Cornrows : These yarn cornrows are by far the best thing about hair i have learnt!