Charcoal: Charcoal Teeth Whitening Strips are designed with advanced whitening technology that helps to remove the toughest of stains on your teeth, giving you a brighter and more confident smile. Strips: These whitening strips are easy to use and can be worn while going about your daily routine, making them an incredibly convenient way to whiten your teeth at home. Simple: Simply apply a strip for 30 minutes each day and see results in 2 weeks of use! Teeth Whitening Strips: Get 28 sessions of Charcoal Teeth Whitening Strips. Pack: Get two packs of whitening strips! Each pack provides 14 applications.