Hidrocor contacts last for a year with proper care and storage. They are only to enhance the eye color and natural beauty only. Before inserting contacts wash and dry hands and cleanse with your solution of choice daily. If you become irritated please remove contact and cleanse eyes and seek medical attention. You must take care of them for the best quality result on each daily usage. All contacts come with a case for storage solution is purchase separately. PLEASE DO NOT SLEEP IN CONTACTS