The invention relates to substances protecting people from non-ionizing radiation of various types, in particular, of non-ionizing radiation resulting from the operation of industrial and household equipment, radioactive, geopathogenic and cosmic radiation, to methods for producing the protective substance, as well as protective devices using it. The protective substance against non-ionizing radiation, according to the invention, comprises water with a modified structure, ions of rare-earth elements such as cerium, in the amount of 0.0012...0.0080 mole/L and formic acid in an amount of (1...5) g/L. The method for producing a protective substance consists in the fact that in a capacity, made of dielectric material, is placed water and metallic silver in the mass ratio of 1000:1 and is treated with a magnetic field of an induction of (10...12) mT for three days, it is passed through an electromagnetic separator for 5 minutes and is carried out the electrolysis using on a metal cathode a powdery rare-earth metal such as cerium, in an amount of 0,002...0,005 g/L at a current density of 1,5 A/dm2 during (5...10) minutes, and after electrolysis is added formic acid in an amount of (1...5) g/L. The protective device is made in the form of a plate, including a substrate made of natural cellulose fibers, for example cotton fibers, on one side of which is applied a thin layer of a protective substance, and placed between two layers of moisture-proof material. The result is the almost complete damping of the negative radiation and creation of a user-friendly protective device.Linvention concerne des substances protégeant les personnes contre un rayonnement non-ionisant de différents types, en particulier, un rayonnement non-ionisant résultant du fonctionnement dun équipement industriel et électroménager, un rayonnement radio-actif, géopathogène et cosmique, des procédés de fabrication de la substance de protection, ainsi que des dispositifs de protection lutilisant. La substan
