Nicole Kidman has the kind of hair I envy. Her copper-blonde mane bounces when she turns and catches every flashbulb. At 58-years-old, the Oscar winner has become something of a quiet ambassador for what aging beautifully actually looks like, and her hair plays a starring role. Luckily, I know Kidman's secret: Vegamour Gro Hair Serum, and it's on sale during Amazon's Summer Beauty Event. The Babygirl star has long been open about how her famously voluminous hair takes work.