Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yacolp.co.

.jp. That's Y-A-K-U-L-T.C-O.jp. When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher in Taliatta.

You hear a lot about how what you eat will affect your microbiome.

Probiotics, prebiotics, stuff like that. But your skin is swarming with microbes, too.

And the grooming products you use might affect what's living there. That's according to a study in the journal BMC biology.

For their tests, researchers recruited six men and six women. The volunteers left their skin

alone for the first three weeks, except for a light body wash. And then for the next three

weeks, the participants applied a modern skin care arsenal, sunscreen and skin lotion,

antiperspirin and foot powder. Finally, the

volunteers returned to their usual routine, whatever it was for each person, for another three

weeks. Throughout that time, the scientists swabbed the volunteers' faces in forearms, armpits,

and feet. Then they did chemical and genetic analyses of the samples. The lotion and sunscreen did not appear to alter the microbiome, but they found, counterintuitively,

that the antiperspirant and foot powder actually boosted the diversity of microbes in the armpits,

and in between the toes, perhaps because those products change nutrient and moisture levels,

and thus create conditions that foster a wider

variety of tiny occupants. The researchers also found that different skin care routines

alter the types of hormones and pheromones present on the subject's skin, and they hypothesize

that someday personalized skin care recipes could be tailored to individuals, to alter our

...