When you buy through links on this page, HuffPost may earn a commission that helps support our journalism. Every product is handpicked by the HuffPost Shopping team, and prices and availability are subject to change. Including one formula that every expert we spoke to recommends. I can’t be the only one who always used to think that “if it’s burning, it’s working.” So when my mouthwash always felt a little unbearable to swish, I simply thought it was doing its intended task of killing bacteria.