Curaprox - Be You - Whitening Toothpaste Contains Fluoride is a must. Hydroxylapatite and glucose oxidase, along with natural ingredients, ensure an enzymatic whitening effect that’s gentle on your teeth. birch sugar tastes sweet as it strengthens your teeth and tackles bacteria. Extracts of echinacea, bitter orange, Indian pennywort support your mucus membranes and stop inflammation. Plus provitamin B5, which supports the formation of new cells.