Baking soda can raise surface area spots however does not bleach tooth color; use sparingly

https://blogfreely.net/dernesvhbz/whitening-for-delicate-teeth-how-we-reduce-discomfort

Baking soda can lift surface discolorations but does not bleach tooth color; usage sparingly, and couple with fluoride tooth paste to safeguard enamel and enhance teeth.