Leighton Davies-Smith has built his life around the lowly pen. As a PhD electrochemist, he’s had a four-decade career formulating inks, refining nibs, and designing the tubular handheld devices that ...

Women's Health may earn commission from the links on this page, but we only feature products we believe in. Why Trust Us? Achieving white teeth can be tricky. Sure, you can use all the straws in the ...

Read the original article on Purewow. PSA: Teeth whitening pens have officially entered the chat. And with the promise of being an easier, less messy (and potentially faster) method than ...