When you purchase $30 worth of eligible Neutrogena® Facial Moisturizers, Facial Treatments and/or Facial Cleansing products you are eligible for a $10 rebate . All purchases must be made between August 28, 2011 and September 28, 2011.*
You can click here  to see all items included in the rebate.
There is nothing that says the items must all be purchased in one transaction or at a particular location. And remember the $30 is before coupons and store credit!
I would print the rebate form  now so you don’t forget (I would forget!)
Here are some coupons you may be able to use for the rebate (be sure to check the approved item list and make sure they are eligible)
– $3/1 Neutrogena Microdermabrasion System printable 
– $1/1 Neutrogena Facial Cleanser, exp. 11/30/11 (SS 08/28/11)
– $2/1 Neutrogena Facial Moisturizer or Treatment, exp. 11/30/11 (SS 08/28/11)
– $1/1 Neutrogena Men, exp. 9/30/11 (RP 06/12/11)
– $3/1 Neutrogena Wave Power Cleanser printable 
– $1/1 Neutrogena Naturals Cleanser, exp. 9/30/11 (SS 05/08/11)