Hollywood Whites at-home bleaching trays are the perfect in-home teeth whitening system. ultra thin trays are comfortable and easy to use. high-quality, 21% carbamide peroxide whitens your teeth, with noticeable results. How often to use For most people, completing a 5 gel kit within the first 1 or 2 weeks will give noticeable results. Any additional desired whitening effect can be maintained with quotPeriodic Touch Ups.quot How long will the results last Your teeth will stay noticeably whiter for up to a year, however, variables like your age, diet, and individual tooth structure will affect the results.
