Clear aligners are transparent, removable trays used to gradually straighten teeth. They are custom-made and virtually invisible when worn. Clear aligners offer comfort and convenience as they can be removed for eating, brushing, and flossing. Treatment involves wearing a series of aligners, which are replaced every few weeks. Regular check-ups with an orthodontist or dentist are necessary to monitor progress. Clear aligners are effective for various orthodontic issues, but severe cases may require alternative treatments.