Two physics experts answer a bewildering shower thought. This is an Inside Science story. Knocking over a shampoo bottle is an annoyance most of us have experienced, especially when the bottle is ...

Shampoo and conditioner can become unstable and potentially irritating once they've expired. Opened shampoo and conditioner ...

The No. 1 dandruff shampoo producer in the country heard that shoppers wanted a version with fewer ingredients and less plastic — so Head & Shoulders developed a minimalist product line called Bare ...

Even people who strictly buy cheap shampoo from the drug store hate to waste money by throwing out a bottle that has enough left for a few more washes. But unfortunately, hair-washing elixirs are ...

That shampoo you’re lathering into your hair may claim that it’s packed with “all-natural ingredients,” but the label tells a different story. DMDM hydantoin? Ammonium lauryl sulphate? What is this ...

Ask any seasoned traveler, and he’ll tell you: Travel shampoo bottles are a huge pain in the ass. They’re a nightmare to fill, they never squeeze stuff out properly, and hotel rooms rarely have enough ...

Small cosmetic bottles are practical for travel. They weigh little and fit in carry-on luggage. But how quickly are the ...