• Cincinnati.com, Tuesday, September 13, 2011 9:30 AM

Rosemarie Osborne, a self-described "skin junkie," is the chemist behind P&G's Olay brand. She is senior scientist at P&G's Miami Valley labs, and her job is to develop formulas to slow skin's natural aging process.

Olay, worth $4 billion at retail each year, is one of P&G's premium products and most heavily advertised brands and is considered one of the company's most promising for sales growth globally. Osborne is one of more than 4,000 researchers on which P&G spends $2 billion every year. Here's her story.

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