Jennifer Guevin was a managing editor at CNET, overseeing the ever-helpful How To section, special packages and front-page programming. As a writer, she gravitated toward science, quirky geek culture ...

When it comes to D.I.Y., you’re a whiz at sprucing up your décor and upcycling thrift store finds into couture creations. Now, it’s time to add hair care products to your homemade-recipe book. “Not ...