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. Similasan of Switzerland works differently, by using natural botanical extracts to stimulate the body's natural defenses and target the root cause. Similasan products are made without harsh chemicals, so you can use them as often as needed. Can be used with contact lenses. Drops will not damage lenses but performance might be better when applied without lenses. If you have redness, itchiness or irritation, it is best to avoid lenses for a while. Trusted by pharmacists and families in Switzerland for 40 years, Similasan is a leading Swiss brand of remedies that use natural active ingredients instead of harsh chemicals to keep families healthy. Our state of the art facility located near the Swiss Alps makes over 190 popular remedies for children and adults. Claims based on traditional homeopathic practice, not accepted medical evidence. Not FDA evaluated.