No. 5: Nexxus Diametress Luscious Volumizing Shampoo, $13.99TotalBeauty.com average member rating: 9.5*
Why it's great: "This shampoo is much less than many 'elite' brands and does what it promises: plumps up fine, thin hair and adds manageability. I have tried shampoos, conditioners, styling aids, root boosts, etc. and this works better than any product I've tried. Paired with a light conditioner, this is the answer to my fine, thin, straight, flat hair!" -- hollyjo, Total Beauty reader
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*At time of publication
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