Piper Jaffray has completed its 19th semiannual “Taking Stock With Teens” survey, and there’s some good news for the beauty industry. Specifically, beauty spending is up for parents and middle-income teens, with spending up 48% and 4% year-over-year, respectively, according to Piper Jaffray. However, the firm reported that more affluent teen spending on beauty was down nine percent year-over-year When purchasing cosmetics and skin care, teen girls prefer to shop in discount stores and d...