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Comparison of Common Cosmetic Preservatives

Comparison of Common Cosmetic Preservatives

Table of Contents

Understand the pros and cons of Phenoxyethanol, Sodium Benzoate, and other preservative systems to choose the right one for your product.

Preservatives are essential ingredients in cosmetics to prevent bacteria and mold. Choosing the right preservative ensures safety and compatibility with the product formula.

1. Phenoxyethanol & Ethylhexylglycerin

  • Pros: Broad spectrum antibacterial, Formaldehyde-free, stable at various pH levels.
  • Cons: May cause irritation at high concentrations (>1%).
  • Active pH: 3 - 12

2. Sodium Benzoate + Potassium Sorbate

  • Pros: Safe for organic products, ECOCERT accepted.
  • Cons: Only effective at pH <5, narrower antibacterial spectrum.
  • Active pH: 3 - 5

3. Leucidal Liquid (from Fermented Radish)

  • Pros: 100% natural, friendly to sensitive skin.
  • Cons: High cost, limited antibacterial spectrum.

Conclusion

For standard products, Phenoxyethanol is still the optimal choice for efficacy and cost. For organic products, consider the Sodium Benzoate + Potassium Sorbate system.