Abstract: This disclosure relates to a composition for facilitating transdermal delivery of vitamin D while preventing UV light from reaching user skin includes a concentration of cholecalciferol within a range of about 10 IU/g to about 40,000 IU/g. The composition includes one or more metal oxides such as zinc oxide and/or one or more titanium oxides which function to prevent (or at least limit) UV light from reaching user skin. The metal oxide(s) are provided at a concentration within a range of about 10% to about 50% by weight of the total composition.