At SYRES we have a particular job: we make consumers talk, and sometimes their armpits. That is the whole spirit of the sniff test: a rigorous, precisely calibrated olfactory method for evaluating a deodorant’s efficacy without leaving room for approximation, even when a smell decides to make itself a little too present.
To compare two deodorants, our protocol runs like a scientific choreography. Applications are standardised: one formula under one armpit, the other under the other, with a randomised draw guaranteeing that nobody always inherits the same side. Trained expert judges then evaluate odour intensity at defined times after application.
Anyone who thinks consumer testing lacks adventure has clearly never attended a sniff test. The protocol gives brands a controlled, reproducible measurement of efficacy over time, and a solid basis for their long-lasting claims.
At SYRES we are convinced of one thing: to understand a product, you sometimes have to accept getting a little closer. Fortunately, our expert judges have legendary composure, and a nose of impeccable loyalty. If you are developing a deodorant and want a solid, controlled and reproducible study, our team is listening.
Originally published in French by SYRES France on 14 December 2025: read the original article.



