Like mentioned, some people are sensitive to baking soda, and using it topically may irritate the skin. Some people who use DIY baking soda deodorant develop rashes or redness on the armpit.
Furthermore, the salt has a pH of around 8.3; that means it’s too basic. Note that skin has a pH of below 5⁷. The slight acidity protects the skin from infections. If you use baking soda facial wash daily, you risk stripping your skin of the protective acidity.
Lastly, remember that baking soda is abrasive. Mixing it with water to form a scrub counts as an exfoliator. No matter how “gentle” baking soda seems to be, there should be an interval in between exfoliation. You cannot exfoliate every day.
Some of the renowned baking soda uses are true. It can help with oral care and might even ease itchiness from eczema. However, one should use it cautiously. Perform a patch test first to see if you’re sensitive to the ingredient. And, of course, the best course of action is to talk to your doctor about the possibility of incorporating it into your routine.
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