Virgin hair extensions are a great way to give you the head of hair you want, but just like your natural hair, they require some specific care. When the hair is cut from the donor, it can no longer produce moisture and natural oils to keep the hair healthy. Thus, you need to keep it hydrated by deep conditioning it. You'll want to leave a light leave-in conditioner in the hair or put in a light serum or argon oil to damp hair. Let the hair air dry after apply it.