Despite pretty much every mainstream brand – as well as lots of specialist brands – making a whitening toothpaste, the truth is that most haven’t been shown to make a huge difference in the whiteness of teeth.
This study into different whitening ingredients found the top three that made the most difference, especially with sustained use, were:
Microbeads – abrasives which are banned from use in toothpastes and other cosmetic products in the UK
Hydrogen peroxide – a key ingredient in many whitening kits and professional treatments
Blue covarine – which gives the teeth a bluish tinge, making them appear whiter
Activated charcoal and some other types of abrasive showed some, less significant, whitening effect.
It’s also worth noting that even the best whitening toothpastes will only remove surface stains on your tooth enamel; they can’t brighten beyond the natural colour of your teeth or alter any discolouration below the surface. There are other options for stronger whitening.
Dr. Banić