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Hydroxyethylpiperazine Ethane Sulfonic Acid

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What's hydroxyethylpiperazine ethane sulfonic acid? 

Hydroxyethylpiperazine ethane sulfonic acid (HEPES) is a buffering ingredient used to establish a neutral pH in water-based solutions.

Recognized for its exfoliating properties, this sulfonic acid derivative works enzymatically to help break the bonds that bind dead cells to the skin’s surface for even exfoliation, reduces roughness.

It is therefore strongly advised to keep HEPES-containing solutions in darkness as much as possible to prevent oxidation. 

The Skin Deep Database lists HEPES as having a low hazard risk.

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