Blame it on the pandemic. A surge in Covid-19 cases in Shanghai and other Chinese cities has put a damper on beauty sales in the world's No. 2 cosmetics market.  China’s beauty sales fell 6.3% in March, according to Steph Wissink, an analyst with Jeffries. She expects the slump to continue due to draconian lockdown measures. For example, Shanghai residents were forced to remain indoors for weeks at a time as the government imposed curfews to combat coronavirus. Procter & Gamble s...