The Lab Notes

How Sweat Turns Detergent Residue Into Skin Absorption: What Science Actually Shows

The Lab Notes

How Sweat Turns Detergent Residue Into Skin Absorption: What Science Actually Shows

Your detergent doesn't fully rinse away. But most people don't know what happens when sweat reactivates it. Research shows dermal absorption of certain chemicals can increase up to 3252-fold during exercise or heat. Here's the mechanism, and why fragrance concentration and surfactant choice matter more than you think.