Apply one drop in each eye twice a day. They are available in single dose vials, which keep the product fresh and lessen any chance of contamination. As with any product it is important to follow usage directions and do as the packaging says when it comes to how many drops you should use per day.
When applied correctly the blue dye cancels out any yellow or red shades of the eye. When your sclera (white part of the eye) appears whiter, the iris (colored part of the eye) appears brighter. This solution is safe and natural and can be used long term as there are no drugs in the solution.