The cosmetics industry's glamour has caught Wall Street's eye — and investors are recognizing that beauty is more than skin deep. Beauty has become a booming sector, driven by a wave of savvy social media creators and startups  that are shaping trends and fueling spending. The consulting firm McKinsey predicts that, by 2030, the industry could be worth nearly $600 billion. At JPMorgan , Fei-Fei Zhang is shaping how the bank is approaching the opportunity. Investment banker Zhang, JPMorgan's