ADVANCED WHITENING TECHNOLOGY - The Astute whitening pen features a fine brush tip that precisely targets the full surface of each tooth, delivering impressive whitening and plaque removal. Brighten your teeth by 4-8 shades with daily use. YEARS OF STAINS, GONE IN 1 WEEK - Our tooth whitening pen quickly erases yellowing due to cigarette smoke as well as years of unsightly stains caused by eating & drinking colored foods like berries, red sauces, coffee, tea, red wine, and soda-pop. TOUCH UP ON THE GO - Use this teeth whitener pen to add a last-minute touchup to your teeth's whiteness before a special event. Lighten and add major sparkle in a short amount of time. The pen is small, portable, pocket-sized, and travel friendly. SAFE FOR SENSITIVE GUMS - The tooth whitener pen uses a potent concentration of Carbamide peroxide for a pain-free whitening experience. Safe for gums and sensitive teeth. Enhance brightness and whiteness while enjoying fresh minty flavor.