You religiously use eye cream, cover up unsightly brown spots, and apply sunscreen-yet people still often misjudge you for being five (or more!) years older. What gives?

No matter what your skin looks like, your hair may be adding years to your appearance. "Over time, our hair follicles shrink, producing a thinner, more brittle and unruly strand," says Kevin Mancuso, Nexxus creative director, who developed its Youth Renewal line to help combat the following eight signs of aging hair. Battle them yourself with these expert tips and products, and bring back your youthful looks.

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