[This review was collected as part of a promotion.] The Oral B Charcoal refills are the real deal. I love the shape of the head. It hugs the tooth and it is better coverage of the tooth surface. It makes my teeth feel so much cleaner. With the infused charcoal head I was concerned about a bad taste while brushing. There was no bad taste at all. I also love tea but not the stains that go with it! I can already see that the stain is starting to go away. Nothing I've used has helped like this. I will tell my friends about this product. I want everybody who needs to get rid of unwanted stain to know about these. I am so glad I tried these Charcoal brush heads they do what the say!!