Derm DMs: Can applying underarm toner help reduce body odor?

I tried to make switch from antiperspirant to natural deodorant for a while, but just didn't find the right formula for me. While scrolling through Reddit recently, I came across an interesting option: applying underarm toner. Before trying this myself, I wanted to know more, including if it's safe given underarm area may be sensitive. I reached out to Dr. Hadley King, Skincare.com consults a dermatologist and Nicole Hatfield, beautician at Pomp. Spoiler: I was given the green light. 

Can toner help get rid of body odor? 

Both Dr. King and Hatfield agree that applying toner underarms can be an effective way to combat bad breath. “Some tonics contain alcohol, and alcohol kills bacteria,” says Dr. King. "Other toners contain alpha hydroxy acids (AHAs) and they can lower underarm pH levels, making the environment less favorable for odor-causing bacteria." Hatfield adds that "tonics can also help clear underarms." 

What type of toner to use for underarms

Because alcohol and acids can potentially irritate the delicate area, Dr. King recommends looking for a formula with a low percentage of any of the ingredients. “Look for a formula that also contains soothing and hydrating ingredients, such as aloe vera and rose water,” she says.

Hatfield likes Glo Glycolic Resurfacing Toner for underarm use because it is formulated with a combination of AHA glycolic acid and aloe leaf juice. 

Personally I have tried Lancome Tonic Comfort on my armpits. This toner has a gentle moisturizing formula that leaves my skin feeling fresh. 

Because I found that my body odor was noticeably reduced after I tried the toner on my underarms, switching to natural deodorant was an easier (and less smelly) process. 

How to apply underarm toner

Moisten a cotton pad with your chosen tonic and gently wipe the affected area daily. "Don't use toner immediately after shaving, as it can irritate the skin or sting a little," Hatfield says. Once dry, use your favorite deodorant or antiperspirant. 

If you experience any irritation or adverse side effects, Dr. King suggests taking a break from your toner and applying a gentle lotion until your skin heals. If you want to try the method again, reduce the frequency of use.