Contact lenses, don't ever think that soaking them overnight will clean them up, we suggest replacing your contacts case and contact lens case with our UpaClaire Ultrasonic Contact Lens Cleaner, with tens of thousands of vibration frequency and water ripples per minute, the same principle as the ultrasonic cleaners in expensive jewelry stores, helps you to clean out all the makeup residues and tear protein dirt inside the crevices of the lenses, and make your lenses as clear as new.