Dry eyes are a common discomfort - reading, stress, contact lens wear, and staring at the screen all day can dry out your eyes. We all want our eyes to feel better, but many dry eye sufferers are concerned about the chemicals found in eye drops. Traditional over-the-counter drops use chemicals to mask symptoms. They may actually worsen the symptoms if used more than directed (usually 4 times a day maximum). Similasan works differently, by using natural botanical extracts from the dry climate of Switzerland to stimulate the body's natural defenses and target the root cause, so you can feel better without harsh chemicals. Go ahead, use as often as needed.