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Geogard® 111S
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Producer: 
Lonza
Brand: 
Geogard
Geogard® 111S is sodium dehyroacetate, a water soluble salt form of DHA, that is globally approved preservative for cosmetics and toiletries featuring high efficacy and low use-cost and broad spectrum activity. This product is a good fungicide and a mild bactericide that is suitable for NPA and Soil Association compliant formulations. It has an excellent toxicity profile and is non-sensitizing and non-irritating.

Geogard® 111S

Producer: 
Lonza
Brand: 
Geogard
Geogard® 111S is sodium dehyroacetate, a water soluble salt form of DHA, that is globally approved preservative for cosmetics and toiletries featuring high efficacy and low use-cost and broad spectrum activity. This product is a good fungicide and a mild bactericide that is suitable for NPA and Soil Association compliant formulations. It has an excellent toxicity profile and is non-sensitizing and non-irritating.
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Experts (1)

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Features & Benefits

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Labeling Claims
Ingredient Claims
Origin
Chemical Synthesis
Key Attributes
  • Organic acid / salt
  • Good fungicide, mild bactericide
  • Salt form is water-soluble
  • Meet ECOCERT and COSMOS requirements
  • Soil Association approved
  • Has a wide range of global regulatory approval
  • Easy-to-use and compatible with most types of cosmetic formulations 
  • Wide effective pH range
  • Compatible with key raw materials
  • Chemically and physically stable
  • Not tested on animals

Applications & Uses

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Baby Care Applications
Bath & Body Applications
Oral Care Applications
Treatment Products
Use Level
0.1-0.68%
Application pH Range
2–6.5
Applications
  • Baby care
  • Baby wipes
  • Body butter
  • Body wash
  • Conditioner
  • Cream
  • Deo/ Anti-perspirant
  • Eye creams/gels
  • Eye shadow
  • Face lotion
  • Face wipes
  • Facial cream
  • Foundation
  • Hair gel
  • Hand soap
  • Lipstick
  • Lotion
  • Make up remover
  • Mascara
  • Oil in Water
  • Oral care
  • Powder
  • Shampoo
  • Suncare
  • Toner
  • Water in Oil
Formulation Recommendations
  • Salt variant (111S) is water soluble
  • Maximum Dehydroacetic acid solubility is 0.1% in water
  • Maximum Sodium Dehydroacetate solubility is 33% in water
  • Use between pH 2–6.5
  • Added at both room and elevated temperatures
  • Added any time during manufacturing process
  • May require a bactericide booster
  • A slight yellowing effect can sometimes be seen by the addition of dehydroacetic acid or its salts
  • Can be limited by the addition of reducing agents / antioxidants, in particular, BHT or sodium metabisulfite or tocopherol (not tocopheryl acetate)
  •  Anionics (carbomers and certain surfactants) and high temps cause discoloration
  • Only the acid form has preservative efficacy; the salt is inactive
  •  Add the sodium dehydroacetate and reduce the pH to liberate acid
  •  Compatible in all types of formulations: anionics, nonionics and cationics

Properties

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Ingredient Origin
Physical Form
Physical Form
Powder
Color
White to Yellow
Odor
Odorless
Soluble in
Water
Compatibility and Solubility of Geogard® 111 vs. Parabens

Regulatory & Compliance

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Regulatory Status
China Compliant
Global Regulatory

Europe

  • Max use level for DHA is 0.6% DHA – rinse-off & leave-on

Japan

  • Max use level for DHA is 0.5% DHA – rinse-off & leave-on

US

  • All ingredients allowed (CIR/PCPC)
  • Refer to present practices of use and concentration

Technical Details & Test Data

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Efficacy

Studies were run using different concentrations of Geogard® 111 in an anionic shampoo to see efficacy against various bacteria, yeast and fungi. All samples were inoculated at the beginning of the study, sampled at 24 hours, 3, 7, 14 and 28 days.

Challenge Testing of Geogard® 111S Compared to Parabens in Anionic Shampoo Against Mixed Bacteria

Challenge Testing of Geogard® 111S Compared to Parabens in Anionic ShampooAgainst Mixed Fungi

Additional Information

Since Geogard® 111 preservatives are based on dehydroacetic acid with a pKa of 5.27, there is more activity across a wider pH range compared to other acids like sorbic acid at 4.76.

The efficacy of Geogard® 111 preservatives is pH dependent, offering greater efficacy at lower pH.

Packaging & Availability

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Documents (4)

Name
Type
Geogard® 111 (A&S) Technical Data Sheet
Technical Data Sheet
Personal Care Solution Guide
Brochure
Geogard® Product Line
Other
Personal Care Preservatives Catalog
Brochure