A process for preparing a sprayable oily liquid formulation comprising a mixture comprising, or alternatively consisting of: - (a) one or more liposoluble vitamins of group D, (b) a triglyceride of medium chain acids chosen among triglycerides of capric acid and/or caprylic acid, and (c) a medium chain triglyceride oil (MCT oil) having a lower content of C8 and/or C10 fatty acids than that of (b), said process comprising the steps of: i. - dissolving the liposoluble vitamin of group D (a) in the medium chain triglyceride oil (c) heated to a temperature of 40°C to 60°C, under stirring until the disappearance of the bottom body so that to obtain an oily solution and vitamin; ii. - adding the triglyceride of medium chain acids (b) to said oily solution and vitamin; wherein said triglyceride of capric acid and/or caprylic acid (b) and said medium chain triglyceride oil (c) are present in a weight ratio of about 1:1; iii. cooling the obtained solution to a room temperature of 20°C under stirring. - (a) one or more liposoluble vitamins of group D, (b) a triglyceride of medium chain acids chosen among triglycerides of capric acid and/or caprylic acid, and (c) a medium chain triglyceride oil (MCT oil) having a lower content of C8 and/or C10 fatty acids than that of (b), said process comprising the steps of: i. - dissolving the liposoluble vitamin of group D (a) in the medium chain triglyceride oil (c) heated to a temperature of 40°C to 60°C, under stirring until the disappearance of the bottom body so that to obtain an oily solution and vitamin; ii. - adding the triglyceride of medium chain acids (b) to said oily solution and vitamin; wherein said triglyceride of capric acid and/or caprylic acid (b) and said medium chain triglyceride oil (c) are present in a weight ratio of about 1:1; iii. cooling the obtained solution to a room temperature of 20°C under stirring. (b) a triglyceride of medium chain acids chosen among triglycerides of capric acid and/or caprylic acid, and (c) a medium chain triglyceride oil (MCT oil) having a lower content of C8 and/or C10 fatty acids than that of (b), said process comprising the steps of: i. - dissolving the liposoluble vitamin of group D (a) in the medium chain triglyceride oil (c) heated to a temperature of 40°C to 60°C, under stirring until the disappearance of the bottom body so that to obtain an oily solution and vitamin; ii. - adding the triglyceride of medium chain acids (b) to said oily solution and vitamin; wherein said triglyceride of capric acid and/or caprylic acid (b) and said medium chain triglyceride oil (c) are present in a weight ratio of about 1:1; iii. cooling the obtained solution to a room temperature of 20°C under stirring. i. - dissolving the liposoluble vitamin of group D (a) in the medium chain triglyceride oil (c) heated to a temperature of 40°C to 60°C, under stirring until the disappearance of the bottom body so that to obtain an oily solution and vitamin; ii. - adding the triglyceride of medium chain acids (b) to said oily solution and vitamin; wherein said triglyceride of capric acid and/or caprylic acid (b) and said medium chain triglyceride oil (c) are present in a weight ratio of about 1:1; iii. cooling the obtained solution to a room temperature of 20°C under stirring.