Is baking soda or baking-soda-free better for sensitive skin?

Baking soda is an effective odor neutralizer but raises underarm pH, and a meaningful share of reviewers across Reddit and retailer reviews report irritation, rashes, or burning from baking-soda formulas. If your skin reacts, look for explicitly baking-soda-free options like Lume or Native's no-baking-soda line.