Over 10 years ago, a friend introduced me to using white vinegar instead of deodorant. My daughter, who was a teenager at the time, started using it as well and we haven't’ used anything else since. You can put it in a spray bottle or just pour a little bit in the palm of your hand and apply! ( if it doesn't quite work just use more! And don't worry about the vinegar smell it will be gone in a few minutes. You can also rinse your underarms after the vinegar has done its magic!) I asked ChatGPT to explain why it works so well, along with a simple explanation of conventional deodorants—and even some “natural” ones—for those who may not be aware of the issues with them. GPT said: Conventional deodorants don’t address the source of odor—they either block sweat glands (antiperspirants) or mask odor with fragrance. Blocking sweat interferes with a normal body function, and layering fragrance over bacteria doesn’t actually eliminate the cause. Many “natural” deodorants aren’t as gentle as they sound. A common issue is baking soda (sodium bicarbonate), which is highly alkaline. It can disrupt the skin’s natural pH and cause irritation or rashes—especially in the underarm area. Other alternatives like magnesium sprays or crystal deodorants may help temporarily, but often don’t hold up throughout the day or still focus on masking rather than neutralizing odor. White vinegar works differently. It contains acetic acid, which lowers the skin’s pH and creates an environment where odor-causing bacteria can’t thrive. Instead of blocking sweat or covering smell, it directly neutralizes the compounds that cause odor. It also evaporates quickly, so the vinegar scent disappears as it dries, leaving no lingering smell. What’s left is a clean, neutral result without buildup or residue, and without interfering with the body’s natural processes.