Provided are dendritic nano-antioxidant compounds according to Formula I, which may further comprise active agents covalently or non-covalently attached. Further provided are compositions comprising the disclosed compounds. Also disclosed are cosmetic compositions and dietary supplements comprising the compounds according to Formula I. The invention additionally provides methods of reducing free radicals or oxidative stress in a cell, a method of treating a subject, and a method of treating a condition comprising administering the compounds according to Formula I.
