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Amazon [amazon.com] has 4-Count Oral-B Charcoal Toothbrush Whitening Therapy (Soft) on sale for $ 11.97 – $ 3 when you ‘clip’ the coupon on product page = $ 8.97 . Shipping is free w/ Prime or on Orders $ 25+
Features as listed on Product Page:[LIST][*]Features charcoal infused bristles[*]Whitens teeth by removing surface stains[*]Power tip bristles are extra long to help clean hard to reach places