Baking soda can lift surface area discolorations however does not bleach tooth color; usage sparingly

https://andersonwmsf170.yousher.com/can-you-bleach-teeth-with-braces-a-guide-to-timing

Sodium bicarbonate can lift surface area spots but does not bleach tooth color; usage moderately, and pair with fluoride tooth paste to protect enamel and reinforce teeth.