I use this every so often. It works well and I feel very clean after. I don't think is a product to be used everyday though, aren't you only supposed to exfoliate only a few times a week?
I have oily & acne-prone skin like your daughter. The scrub is actually a bit harsh... you should look into Philosophy's The Microdelivery Exfoliating Scrub (it's gentle enough to use daily... I love it!).