I'm worried about my middle school daughters' acne-prone skin during puberty.

Both of my middle school daughters are currently in the midst of puberty, and as the days go by, their acne is getting worse

It's getting bigger, so I'm worried.

I tell myself that adolescent acne is inevitable, but I'm worried that scars will form if I don't take care of it, so I've been trying all sorts of things that are supposed to be good, yet there is no sign of improvement.

How should I manage adolescent acne?