Ready for some real high-impact volume to your lashes? The Big Bold Extreme mascara is an extended version of the Big Bold Mascara and takes the formula one step further with the extra big duo fiber brush – essentially combining two brushes in one. With a mix of short and long bristles to the brush and a formula that is highly buildable, you can easily layer the mascara for even bigger and bolder lashes. The formula is also sweat-proof and long-lasting, infused with active, caring ingredients for nourishing and strengthening your lashes.