Geogard 221 Preservative

Geogard 221 Preservative

PRSRV-GEOGRD-221-30ML

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$7.05
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Geogard® 221 is a broad-spectrum preservative designed to protect water-based and emulsified personal care formulations against the growth of bacteria, yeast, and mould. Offering effective preservation at low usage rates, it is well suited for a wide range of rinse-off and leave-on products, including lotions, creams, shampoos, conditioners, facial cleansers, toners, gels, and liquid soaps.

Comprised of dehydroacetic acid and benzyl alcohol, Geogard® 221 is valued for its versatility, ease of use, and compatibility with many cosmetic ingredients. It is added during the cool-down phase and performs best in formulations with a final pH below 6, making pH adjustment and testing an important part of the formulation process.

Accepted for use in ECOCERT and COSMOS compliant formulations, Geogard® 221 is free from parabens and formaldehyde donors, making it a popular preservative choice for formulators developing naturally inspired personal care products. Whether you're creating handcrafted skincare or scaling up for commercial production, Geogard® 221 provides dependable broad-spectrum preservation to help maintain the quality and stability of your finished formulations.

For emulsified and water-based formulations, Geogard® 221 is easily incorporated at temperatures below 45°C. For best performance, ensure the final pH of your formulation is below 7.0, as preservative efficacy decreases at higher pH levels.

Usage Rate: 0.2–1.1% (We always recommend testing all newly developed or modified formulations to verify adequate preservation.)

Formulation Recommendations

  • Use between pH 2–7
  • Efficacy can be compromised above a pH of 7
  • Recommended to be added below 45°C
  • Enhanced compatibility allows for the addition of Geogard®221 virtually anywhere in the manufacturing process
  • Anionics (carbomers and certain surfactants) can cause discoloration. This can be limited by the addition of reducing agents /antioxidants, in particular BHT or sodium metabisulfite or tocopherol (not tocopheryl acetate)
  • Highly soluble in polar organic solvents

Can Be Used In: Creams, lotions, body butters containing water, facial moisturizers, serums, cleansers, toners, shampoos, conditioners, body washes, liquid soaps, hair treatments, and other water-based or emulsified personal care formulations.

The Advantages of Using Geogard® 221 Preservative Are:

  • Broad-spectrum protection against bacteria, yeast, and mould
  • Accepted for use in ECOCERT and COSMOS compliant formulations
  • Free from parabens, formaldehyde donors, and isothiazolinones
  • Effective at low usage rates
  • Compatible with a wide variety of water-based and emulsified personal care formulations
  • Low colour profile that works well in clear or lightly coloured formulations
  • Suitable for both rinse-off and leave-on products

Technical Information: 

  • INCI: Benzyl Alcohol & Dehydroacetic Acid & Aqua
  • CAS #: 100-51-6 & 520-45-6 & 7732-18-5
  • Specific Gravity: 1.059 @ 20°C
  • Appearance: Clear, colourless to pale yellow liquid
  • For emulsified and water-based systems, Geogard® 221 can be easily incorporated at temperatures BELOW 45°C.
  • Usage rate: 0.2 - 1.1% (We always recommended to test all newly developed or altered formulations to guarantee proper preservation.)

COMPOSITIONAL BREAKDOWN

  • Benzyl Alcohol: 85 - 89%
  • Dehydroacetic Acid: 7.7 - 8.3%
  • Water: 4%

Key Product Benefits

  • Wide range of global regulatory approval
  • Wide effective pH range
  • Safe handling
  • Chemically and physically stable
  • Soil Association approved
  • Vegan
  • Non-GMO
  • China compliant
  • Cruelty- free [Not tested on animals]
  • While not itself approved by ECOCERT or COSMOS, this preservative is allowed in COSMOS & ECOCERT final formulations

Safety Data Sheet

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