The company's guidance for its current quarter fell short of expectations.The stock of wellness and beauty company Nu Skin Enterprises (NUS -3.17%) wasn't looking particularly fresh and beautiful on the last trading day of the week. The shares lost over 3% of their value on the day, following the company's release of its second-quarter results. The rest of the stock market generally did better, with the S&P 500 index recording a gain of just under 0.5%.Second-quarter results unveiledShortly after market clo ...