Hydration multipliers are everywhere. Should you use them in a heat wave?

Staying hydrated is crucial to feeling your best, especially as temperatures across the globe soar. Some may turn to powdered products marketed as hydration multipliers to help.

While experts say buying hydration multipliers aren't entirely necessary, they can be useful in certain circumstances — but there are things to be aware of.

"Plain water is still the gold standard for hydration, so don't skip it," Dr. Shannon Dowler, family physician and board of directors at the American Academy of Family Physicians, told CBS News. But, they can be a great tool if you're spending a lot of time outside or exercising heavily, she said.