Method for oxygen treatment of liquid unsaturated carbon compounds with carbon number between 6 and 26 wherein the material is placed in a reaction chamber (11), a mixture ozone and oxygen is passed through the material, and by controlling the flow rate of the gas mixture through the material the temperature of the reaction is controlled to remain below a predetermined maximum value being 100.degree. C. As a result of the reaction a novel material is obtained which has an epoxy-structure, has a higher density and smaller viscosity than the starting material, it has excellent burning properties and can be used as a limited rate source of oxygen. The apparatus for carrying of the method comprises an oxygen source, and ozonizer (6), a reaction chamber (11) for containing the liquid starting material, a gas pump (13) for removing the gas from the reaction chamber, and a temperature control system. An expedient field of application for the novel material is a therapeutic composition that facilitates natural metabolism of cells that comprises hydroxy proline and a neutral carrier material, wherein the amount of the material is below 20% and the amount of hydroxy proline is below 10%.