Lay's Wow Chips were fat-free potato chips produced by Frito-Lay containing Olestra. They were first introduced in 1998, and were marketed using the Lay's, Ruffles, Doritos, and Tostitos brands. Although initially popular, charting sales of $400,000,000 in their first year, they subsequently dropped to $200,000,000 by 2000, as Olestra caused "abdominal cramping, diarrhea, fecal incontinence ["anal leakage"], and other gastrointestinal symptoms" in some customers,^[1] warnings were required to be included on the packaging, with the WOW bag bearing a warning that read, "This Product Contains Olestra. Olestra may cause abdominal cramping and loose stools. Olestra inhibits the absorption of some vitamins and other nutrients. Vitamins A, D, E, and K have been added."^[2]

Around the same time, the WOW brand was renamed to "Light." The product then continued under that brand name until they were discontinued in 2016.