Men are becoming more concerned with their appearance, driving up sales of male skin care products and sparking the development of new lines in the process. While dismissed in some quarters as a metrosexual fad when it first surfaced in the late 1990’s, the trend has shown staying power. Sales of men’s skin care products sold in department stores jumped 13% last year, more than twice the total growth for the overall and women’s skincare markets, according to NPD Group, a marketing information c...