when ur eyes feel irritated or tired... hey just relax wash ur eyes with ice cold water ..it will make ur eyes very relaxed..if the ice cold water is not readily available don't panic...first wash with regular water then u can keep some water in the freezer ...u can also do this..take a cotton in the rectangle shape.dip it in ice cold water..then place it on ur eyes...lie on the flat position when u have the cotton placed on ur eyes..stay like that for 5 minutes...do this regularly .. u will be surprised by the results..