Boric acid, usually in a shape of white powder crystal or three oblique surface of scaly luster crystal, has oiliness feel. It can be soluble in alcohol, glycerin, ethers and essential oil. When it is in water, it shows the weak acid character. However, you should not use the boric acid to wash your eyes although it has almost no stimulating irritates. It will leave the sediments on the eyeballs which will be bad for your eyes if you don't wash it clearly. And the character of absorption is bad. You should better use the eye drops with some limited functions which will make your eyes feel better and comfortable.