The Aveeno free sample offer is back! Get a free sample of Aveeno's Nourish line of shampoo and conditioner when you answer three questions about your hair-care habits. You can choose to receive a coupon instead of a free sample. The offer expires Dec. 31, 2010, but supplies will run out long before then.

To get the deal, share your name, address, e-mail and gender, plus answer four more questions about hair products. I got a free sample months ago and liked it. Each packet had enough to wash my hair twice. You can pick from the moisturize, volumize, revitalize or shine versions.

Caveats: the free sample takes 4-6 weeks to arrive. Limit one sample per household. Must be 18 years of age and older or age of legal majority in your state at the time of registration. Offer limited to the United States.