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" Like diamonds or the perfect little black dress, an eyelash curler is a girl&amp;#039;s best friend. Using one is a fast and easy way to perk up sleepy eyes in the morning or rev up a glamorous look at night. Expert tip: Begin at the base and squeeze several times as you gradually work toward the tips, says Polly Osmond, a makeup artist for Victoria&amp;#039;s Secret in New York City. Lashes should curve, not bend sharply. The Good Housekeeping Research Institute (GHRI) tested mechanical and heated curlers to see which ones are worthy of a spot in your makeup bag. What We Looked for in Eyelash Curlers Scientists in GHRI&amp;#039;s beauty lab evaluated heated and mechanical eyelash curlers for how well they increased the curl of women&amp;#039;s lashes. They also tested how quickly heated curlers warmed up. A panel of women testers evaluated heated and mechanical eyelash curlers for:  \u2022 Ease of use \u2022 Clarity of instructions \u2022 How comfortable they were to handle \u2022 Whether they pinched or hurt skin during use \u2022 Speed at which they curled lashes \u2022 Effectiveness at making lashes look curlier \u2022 Ability to make lashes look fuller \u2022 Ability to make eyes appear more defined \u2022 Ability to curl all of the lashes \u2022 Tendency to pull or break off lashes \u2022 Likelihood of using it in their regular eye makeup routine Women also evaluated each heated and mechanical eyelash curler for how quickly they curled lashes. How We Tested Eyelash Curlers In the GHRI beauty lab, a professional photographer took photos of volunteers&amp;#039; eyelashes from three angles before, immediately after, and four hours following the use of each curler and a leading mascara. GHRI scientists then measured the angle of lashes in the before-and-after photos to determine how much curl the tools produced. Scientists attached thermocouples (a kind of thermometer) to the heated curlers and measured the time it took for them to reach their maximum temperatures. Consumers tried blinded heated and mechanical curlers at home for a week to evaluate ease of use and performance. How to Safely Handle Heated Eyelash Curlers While GHRI scientists didn&amp;#039;t find any safety issues with the heated curlers, they do recommend these safe-handling instructions:  \u2022 Don&amp;#039;t hold them against lashes for more than a few seconds. \u2022 Avoid direct contact with eyes. \u2022 Do not use with wet hands. \u2022 Do not clean with water\u2014only wipe with a dry tissue. \u2022 Turn off after use. \u2022 Keep away from children. \u2022 Always follow the manufacturer&amp;#039;s instructions. "^^<http://www.w3.org/2001/XMLSchema#string>
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