I haven’t used this product personally but several of my teenage voice students swear by it.
And since your kids are about to go back to school (and want to look their best) ProActiv  is running a special on their products: their 5 item starter kit is on sale for $19.95 with FREE shipping .
The kit includes Renewing Cleanser, Revitalizing Toner, Repairing Treatment, Refining Mask and Green Tea Moisturizer (trial size). Usually it’s $27.95 for 4 pieces!
Disclosure: When you sign up for this deal they enroll you in their auto ship program. As soon as you receive your products just cancel!