cholehematin
/ˌtʃoʊlɪˈmeɪtɪn, ˌtʃoʊlɪˈmeɪtɪn/Definitions
1. noun
A type of fat that is naturally produced by the body, particularly in the case of a newborn baby.
“The pediatrician explained to the new mother that it’s normal for newborns to have a layer of cholehematin on their skin.”