[Mark]

I use baking soda with small amount of 3% hydrogen peroxide and then toothpaste a couple times per week. Now I see that Colgate OPTIC White toothpaste contains hydrogen peroxide. Costco sells it. It’s supposed to kill bacteria by eliminating oxygen.

[MaxMax]

If your gums are red stop using Peroxide. Peroxide kills healthy cells and can
further irritate the gums. I don't care what the white coats say, don't use it.

[grey_whiskers]

BZZZZZT.

Hydrogen peroxide *liberates* oxygen:

2H₂O₂ --> 2H₂O + O₂

Cheers!