no, flossing only delays/prevent tartar between the teeth, doesnt stop the caries from forming on the biting surfaces. you have to combine that with toothbrushing, perfrabally electric toothbrush or sonic toothbrush, because they are better at cleaning than manually, and mouthwash(peferabally with FLouride).

whitening agents, toothpaste are advised against because they degrade your teeth.