What should I do about the acne on my child's body?

As my child started her first period, small pimples began to appear on her forehead.

Since she is a girl, I’ve been taking good care of her with everything from acne patches and topical medication to skincare products, so her acne has calmed down and only one or two pimples appear occasionally... but the problem is that she takes after her husband, and at some point, acne started breaking out on her body...

And a lot of it on my forearms, too. What should I do about this?!

Even if I use it like I'm taking care of my face, it doesn't have much effect.