Active Wow Teeth Whitening Charcoal Powder ($25) is the top rated teeth whitening product on Amazon for a reason…It works really well. If you have yellowing or discolored teeth, you should see results after the first use. Active Wow is all natural. It’s made from organic coconut activated charcoal powder that absorbs stains from your teeth. Bentonite, which is high in mineral content, and is used to remineralize our teeth and absorb toxins. And Orange Seed Oil is used as a natural teeth whitener, an anti-inflammatory, and an antiseptic. To use just slightly wet your toothbrush, dip the brush in the charcoal powder, and brush your teeth like you normally would for 1-2 minutes. Spit into the sink and wash the sink clean. Use a few times a week for dramatic results. Reviewers have suggested using it in the shower to help with cleanup, floss or use mouthwash afterward, and designate a toothbrush just for the charcoal because this stuff will turn it black.