Frizzy Hair? Tame your frizz and stretch it out to make your hair look longer and sleeker for up to 72H of straight hair with no frizz. L’Oréal Paris Elvive Dream Long Straight Shampoo is enriched with Black Cumin Oil and Micro Keratin, a smoothing technology to soften the hair fibers. As a result, the hair will become naturally straight, supple, and shiny, extending hair length with no frizz.