Let’s look at how the treatment is supposed to work, along with the safest ways to use it. Board certified dermatologist Keira Barr, M.D., agrees: “Due to the abrasive nature, not only can the baking soda damage the hair shaft and contribute to hair breakage and split ends, it higher pH may also harm your scalp causing redness, inflammation and itchiness. Baking soda also opens up the hair cuticles, which causes water absorption: some absorption can be helpful, but too much can weaken the hair.” Essentially: Baking soda shampoo should only be used when your scalp needs a deep clean—and the same goes for any clarifying shampoo. If you have very dry hair, consider skipping this shampoo and sticking to an apple cider vinegar rinse (more on that later). But if you’d like to test it out, know that it isn’t meant to be used on the regular. And you should also keep in mind that some skin types are especially sensitive to baking soda. Always do a patch test on your inner arm before slathering it on your scalp. Safety first, folks. Interested in trying it? Here’s how to make and use this popular hair care treatment: You might also need a clarifying shampoo if your hair hurts: As strange as it sounds, all that gunk can cause scalp inflammation and, eventually, painful hair. Ouch. Mix the ingredients in a small bowl until they form a thick paste. Some shampooers like to add a few drops of essential oil. Pour the mixture into a clean and empty bottle; an old travel-size shampoo bottle is perfect for the job. Use a funnel to make this step easier. Note that the shampoo works best when it’s made right before use—so don’t make it and then store it for later. Like baking soda, however, apple cider vinegar may irritate some skin types. Don’t overdo the rinse, and only use it when you need a clarifying treatment. Even then, your ideal frequency might vary as the seasons change. The same goes if you switch hair products or change your workout routine. What’s most important is that you pay attention to your individual hair and scalp needs. RELATED STORY: Our Full Guide To Scalp Care, Expert Tips + Products Included
