Citric Acid

Acid · E330

What is Citric Acid, and why is it used?

The acid that makes lemons sour. Used to add tartness, adjust pH and help preservation.

Where from

Occurs naturally in citrus. Most commercial citric acid is produced by fermentation using the mold Aspergillus niger.

Why it's used

Flavor, pH control, and supporting preservatives — in foods and in shampoos and skin care.

Regulatory

US: GRAS. EU: E330.

Connected topics

• Sodium Benzoate
• Shampoo

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General education only, not medical advice. Drafted Oct 2026 · pending qualified expert review.