Combine water and flaxseeds and bring to a boil. Stir continually watching for a thin, white, bubbly jelly to form. Lower the heat as soon as you see that foam. Keep stirring until the seeds are suspended in the liquid instead of sinking. Remove from heat and put through the strainer with a bowl underneath to catch the gel. When cool, add essential oil and any other desired add ins. Store in a container with a lid.