Use this care products now for over 2 years. No itching, no burning, the contact lenses do not feel. Had never really have any eye problems which stand in connection with the care product. Cleans and maintains the contact lenses in my opinion, great! Although Stiftung Warentest what does another .... And the value for money is great! Wearing contact lenses "Air Optix Aqua". With the closure of the bottle traveling I never had problems. Never before has something leaked, and otherwise is this care product can only be recommended!