Activated charcoal formula is safe to use for whitening your teeth, while being easy on your gums. Naturally whitens your teeth, not through harsh dental-grade whitening peroxides, but through the power of Activated Charcoal, nature¡'s best purifies and detoxifiers.Unique formula whitens your teeth over time, and helps remove stains from a number of causes: coffee-stains, wine, cigarettes, and more - all without harsh chemicals or bleach.