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INGREDIENT DICTIONARY

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Citric Acid (Anhydrous)

INCI: Citric Acid | CAS #: 77-92-9

Citric acid is an acid used in cosmetic formulations primarily for pH adjustment.

What is Citric Acid (Anhydrous) & why is it used?

It is used to adjust and control formulation pH to ensure stability and proper performance of ingredients.

 

QUALITY MATTERS

Why specification quality matters

Cosmetic-grade citric acid with high purity and low impurity profile, supporting consistent formulation performance. 

Solubility Water soluble
Primary function Buffer / acid
Use level 0.05–2.0%

Behaviour in formulations

Lowers pH and helps maintain stability of formulations.

Sensory notes

Citric acid has minimal direct sensory impact at typical use levels but contributes to overall formulation performance through pH control.

Formulation considerations

PROCESSING

Dissolve in water before addition. Add slowly while monitoring pH.

COMPATIBILITY

Compatible with most water-based systems. Care should be taken with pH-sensitive ingredients such as niacinamide and certain actives.

pH
Strongly acidic. Always dilute before adding and adjust gradually.
FORMULATION EXAMPLES

Toner

  • Citric acid: 0.1–0.3% (as solution)
  • Water phase

Cleanser

  • Citric acid: 0.1–0.5%
  • Surfactant system

 Serum

  • Citric acid: adjust to pH
  • Actives

Use level considerations

Recommended range 0.05–2.0%
Suggested starting level 0.1–0.5% for most cosmetic formulations%

Typically used at 0.05–2% depending on function.

Formulation summary

A functional acid used to control pH in cosmetic formulations.

Quality notes

Cosmetic-grade citric acid with high purity and low impurity profile, supporting consistent formulation performance. 

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