Abstract: This invention describes a polymer surface being coated at least partly with a coating composition comprising at least one oil and at least one emulsifier, which forms a homogenous solution. The invention further describes a container for holding a fluid comprising at least one inner surface, said inner surface being, in use, in contact with said fluid where said inner surface is a coated surface. The invention further describes a use of a coating composition for improvement of release properties of a polymer surface by coating at least partly said surface with said coating composition comprising at least one oil and at least one emulsifier, which forms a homogenous solution.