By Jessica DiNapoli and Juveria Tabassum (Reuters) -Procter & Gamble on Friday beat Wall Street estimates for first-quarter results, helped by strong demand for its beauty and hair-care products amid higher prices and a broader slowdown in spending due to economic uncertainty. The Tide maker's shares were up about 3% after it also halved its annual tariff cost estimate to about $400 million after tax, largely on Canada lifting retaliatory duties on U.S. goods. However, U.S. President Donald Trump on Thu ...