pH

What is pH?

The acidity of a formula, controlled tightly in Korean skincare because it governs skin compatibility, acid efficacy and preservative performance. It appears as a specification range on the certificate of analysis for every batch, and an out-of-range batch is a legitimate rejection ground.

At a glance

Category

Formulation

Also known as

pH

Korean term

pH

Last reviewed

July 23, 2026

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