Lotion

I tried making lotion recently. It did not turn out well. I couldn't find liquid lecithin anywhere so I used lecithin granules from a health food store. I crushed them and put themm in the oil part of the recipe. I kept heating the oil until it dissolved the lecithin and then added the water and mixed. I let it cool until it was yellowish white and stirred it a lot. For the first few days it was fine, but after that it seperated. I shake it to mix it again but its very watery and not like lotion at all. I don't know how to fix it. Any suggestions are welcome :)