Good product for puberty sweat odor

Yesterday, I was a pubescent boy in the 3rd year of middle school.

He came into the house

My mom said, "My underarm sweat is really bad... (since it's hot) please buy me something to get rid of the sweat odor."

He's still like a baby...

It seems he is worried because he is going through puberty.

So I'm looking for a mild product suitable for children to remove sweat odor.

I would appreciate it if you could recommend a product. ^^