Currently there is no standard treatment to promote wound healing for split thickness skin graft donor sites and healing is determined based on clinical observation of the graft donor site and clinical judgement. Here we propose to use two instruments commonly used in skin research to measure wound healing. This study will validate the use of these two instruments, one that measures transepidermal water loss and the other that measures skin pigmentation to determine healing. To further validate the use of these instruments we will determine if these instruments can detect differences between two different wound dressing products that have been previously reported to heal skin graft donor sites at different rates.