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"The Good Housekeeping Research Institute (GHRI) recently tested four salon keratin hair treatments \u2014 the popular process that makes frizzy locks sleek \u2014 for the presence of formaldehyde, a known carcinogen, and found that all four contained the toxic chemical. When we heard about an at-home version of the $300-plus process that promised the same results for half the price and claimed to be formaldehyde free, we had to investigate. We sent samples of Salon Favorite Do-It-Yourself Keratin Treatment Kit to an outside lab for analysis. Test results confirm that, as claimed, it does not contain formaldehyde. Instead, it uses a chemical called glutaraldehyde as its active ingredient to bond keratin to the hair. Glutaraldehyde is in the same chemical family as formaldehyde, but it is not considered a carcinogen nor is it included on restricted-chemical lists such as those published by the International Agency for Research on Cancer (IARC) and California&amp;#039;s Proposition 65. However, exposure to glutaraldehyde still could affect eyes, skin, and lungs. The instruction manual for Salon Favorite warns consumers to avoid inhalation, ingestion, and contact with skin and eyes; to wear protective gloves (included in the kit) while applying; and to use it in a well-ventilated area. This warning, coupled with our concerns over the application method (like salon versions, the at-home treatment calls for heating the hair with a flat iron, which could release irritating fumes), led us to decide it was too risky to test the product&amp;#039;s straightening prowess on volunteer testers or hair swatches in our labs. GHRI continues to recommend using a flat iron, such as the Remington Style Therapy Frizz Therapy ($50), which performed well on GHRI tests and was a past GH Very Innovative Products (VIP) Award winner as a safer way to straighten hair at home. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.goodhousekeeping.com/institute/a18138/salon-favorite-diy-keratin-treatment-kit/>