You've probably been spending way too much time in the bathtub if you're reading shampoo labels.

Sodium laureth sulfate is what puts the bubble in your shampoo. It’s a cheap foaming agent used in a wide variety of products including laundry detergent, bubble bath, and hand soap.

Sodium laureth sulfate is a both a detergent and a surfactant. It’s a less harsh form of Sodium dodecyl sulfate (a.k.a. sodium lauryl sulfate). Still, studies have shown it can be irritating to the skin and eyes.

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