Ethanolamine

Ethanolamine is a small organic compound composed of an amino group and an alcohol group. In skincare products, it serves primarily as a pH buffer—a substance that helps maintain a stable acid-alkaline balance within a formulation. This is particularly important when products contain acidic ingredients that might otherwise irritate skin or become unstable.You'll find ethanolamine in roughly one in a thousand skincare products, typically at very low concentrations. It's used behind the scenes in formulation work rather than as a headline ingredient, which reflects its supporting role in prod…

Ethanolamine works through acid-base chemistry. When formulations contain acidic ingredients (such as certain acids or acid-derived compounds), ethanolamine acts as a chemical 'buffer' by accepting or donating protons—essentially absorbing excess acidity and preventing pH from dropping too low. This keeps the product in a range that's compatible with healthy skin.The buffering effect is indirect; you won't see or feel it working, but it allows other active ingredients to function safely and effectively without causing unnecessary irritation from extreme pH.

As ethanolamine is a formulation ingredient rather than an active treatment, there are no specific usage instructions. It will be present in your product at the concentration determined by the manufacturer to achieve proper pH balance. If you're using products containing acidic actives (such as vitamin C or exfoliating acids), a buffered formula containing ethanolamine may feel less irritating whilst maintaining efficacy.

Ethanolamine is generally well-tolerated in skincare at the concentrations used for buffering. It is not a known sensitiser at these levels, though as with any ingredient, individual sensitivity is possible.