Ultraviolet radiation sun protective compositions are reported which feature micronized metal oxide inorganic particles selected from zinc oxide, titanium oxide and mixtures thereof, the inorganic particles being coated with poly [C8-C20 hydroxycarboxylic acid], the coated particles measured at a 10% loading in dodecane and 1 minute elapsed time having a Zeta Potential ranging from 2 to 10 mv, amounts of the poly [C8-C20 hydroxycarboxylic acid] to the inorganic particles being in a relative weight ratio of 1:100 to 1:10.