If you are looking for a formula that is cheaper than the big brands, maybe request this sample of the Wal-Mart store brand and try it out and see if it works for you!
Nature's Bounty is offering a sample and coupon for their Fish Oil Supplements. They are supposed to have some positive effects on the the body, so why not try it out...free!
The Dove shampoo offer is still up and running, so if you haven't requested it yet, go! I love Dove's products and I use these samples for trips or to put out for guests!