Sodium bicarbonate can raise surface area discolorations but does not bleach tooth color; usage sparingly

https://blogfreely.net/dernesvhbz/the-fact-about-charcoal-toothpaste-does-it-truly-whiten

Sodium bicarbonate can lift surface area discolorations but does not bleach tooth color; use sparingly, and pair with fluoride tooth paste to safeguard enamel and enhance teeth.