 Skin Microbiome Substudy Plan: A controlled study of a commonly used skin treatments No Sting protective spray and no treatment will be performed in 30 ELBW infants Study Group 2 to determine if No Sting promotes different skin microbial colonization. The current standard of skin care for ELBW infants in the Duke ICN is application of No Sting to all external exposed, non-mucosal areas shortly after birth and again at one week of age. 