A symbol of a studious individual hard at work, the humble neon highlighter pen is nevertheless often akin to an un-surreptitious sword; brightly coloured and clumsily wielded by many, often ...

An curved arrow pointing right. Watch full episodes of the Science Channel series "How It's Made" on the Science GO app or at: http://insder.co/HowItsMade More from ...

If you've been wearing makeup for years, you will have almost certainly heard of, if not come across, the Yves Saint Laurent Touche Éclat Illuminating Pen. This multi-purpose highlighter pen has ...