Please soak the contact lenses in the multipurpose solution at least 4 hours. If possible, 8 hours or overnight.2. After wearing each time, clean the contact lenses with multipurpose solution. You can clean it with traditional way, palm & fingers or modern way, contact lens cleaner. 3. Then store the contact lenses in the contact lens case with fresh solution. Always check the solution level, says once a week, to check if there is still solution left, as it may evaporate. Change new solution every 1-2 week.4. Rinse the contact lenses before wearing next time. Repeat step 2 to 4 every time after use.