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"How We Chose the Winners 1. We rounded up products: Beauty brands sent us any and all hair-care products that promised gray coverage or included words like &amp;quot;anti-aging,&amp;quot; &amp;quot;age-defying,&amp;quot; or &amp;quot;ageless&amp;quot; in their names. We didn&amp;#039;t limit our search to the hottest newbies; since this is a growing market, we were equally interested in hair care that had stood the test of time. We examined 100-plus products in all price ranges, from drugstore and beauty-supply-store bargains to pricier brands sold in salons, beauty specialty shops, and department stores. 2. Next we started dialing, and called on a board of prestigious industry experts to discuss the latest and best hair-care testing methods. With a list of product claims in hand \u2014 added shine, breakage protection, lasting color, and more \u2014 we made sure we were set to evaluate each of them, even having a custom device built for shine testing. 3. Then we got to work: We recruited 579 female volunteers, ages 35 and up, to participate in our testing. Each treatment was distributed to at least 20 women and (for some items, like haircolor) up to 35. To keep the competition fair, we &amp;quot;blinded&amp;quot; product labels with black electrical tape so volunteers wouldn&amp;#039;t know which product they were trying. Even when treatments promised instant improvement, testers used them multiple times over the course of a week to see if they consistently delivered on their promise of shinier, fuller, softer, smoother \u2014 and, in some cases, stronger \u2014 hair. For color, they evaluated the results for three or four weeks, according to the claims on the box. Volunteers then filled out a lengthy questionnaire for each product tested. They gave us feedback on the nitty-gritty, from how easily a product could be opened and dispensed to whether it left their hair greasy.  4. In the Beauty Lab, scientists and engineers separated almost nine pounds of human hair, ordered from hair suppliers, into 736 swatches \u2014 brown for hair-care products (which were then bleached to inflict damage), 100% gray for permanent haircolor testing, and gray blends for demi-permanent color testing. Our lab team assessed the performance of the hair treatments on the swatches using state-of-the-art equipment: an Instron, a mechanical measuring device fitted with a comb to record the amount of friction experienced when it moved through a wet or dry hair swatch (less resistance means more protection against breakage); a custom-built shine cylinder situated under a bank of specialized lights so that each swatch could be judged under exactly the same conditions; a swatch wash station to deliver water at a controlled temperature and speed; and an Accelerated Weathering Tester that blasted swatches with UV light to assess how likely it was that haircolor would fade in the sun. They also performed technical shine measurements on a Samba HVASS device located at the Textile Research Institute (TRI) in Princeton, NJ. 5. After 11 months of research, we tallied 1,055 questionnaires and 2,716 lab measurements, and read hundreds of tester comments. Now we&amp;#039;re unveiling these 17 winners. Consider your bad hair days numbered! Meet Our Experts The Good Housekeeping Research Institute scientists were the brains and brawn behind this massive undertaking. They designed the studies, recruited the volunteers, compiled the questionnaires, oversaw the lab research, and wrote the reports.   Birnur K. Aral, Ph.D., health, beauty &amp;amp;amp; environmental sciences director  &amp;quot;Even though many of the volunteers were unfamiliar with instant root touch-ups, the category turned out to be a favorite.&amp;quot;   Charmaine A. Rodriques, chemist   &amp;quot;Matching the hundreds of haircolor samples to each tester&amp;#039;s specific shade was by far the biggest challenge we faced. In some cases, I had to send three different shades to testers before we made an exact match.&amp;quot;   Mary E. McConnell, product analyst   &amp;quot;This was the first time we used a visual-rating panel for shine. It was exciting to see that their ratings perfectly matched the feedback of the high-tech Samba shine-evaluating machine.&amp;quot; Our Anti-Aging Awards Advisory Board provided invaluable expertise. Trefor Evans, Ph.D., Princeton, NJ, director of measurement services at the Textile Research Institute (TRI) David H. Kingsley, Ph.D., New York City, hair and scalp specialist, president of the World Trichology Society, and adjunct member of the American Academy of Dermatology  Louis Licari, New York City, colorist and owner of Louis Licari New York and Beverly Hills Roger L. McMullen, Ph.D., Wayne, NJ, senior research scientist at International Specialty Products Randy Wickett, Ph.D., Cincinnati, professor of pharmaceutics and cosmetic science at the James L. Winkle College of Pharmacy at the University of Cincinnati "^^<http://www.w3.org/2001/XMLSchema#string>
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