Can a Yeast-Based spray beat underarm odor? a trial puts it to the test

NCT ID NCT07726238

ENROLLING_BY_INVITATION Symptom relief Sponsor: Kingdom Source: ClinicalTrials.gov ↗

First seen Jul 24, 2026 · Last updated Jul 24, 2026

Summary

This trial tests whether NOBO, a deodorant spray made from a yeast fermentation product (a postbiotic), can reduce underarm odor in healthy adults aged 18 to 70. Each participant applies NOBO to one armpit and a placebo to the other, then rates the odor themselves. The goal is to see if the postbiotic side smells less than the placebo side.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: a yeast-based postbiotic spray called NOBO
What this could lead to: If it works, this could offer a natural alternative to conventional deodorants for controlling body odor.
What could go wrong: This is a very small, early proof-of-concept trial with only 14 participants, so results may not apply broadly. The effect may be no better than placebo.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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