Geogard Ultra is a natural broad spectrum preservative the combines two organic acids that work together to provide long-lasting, effective protection from the growth of bacteria and fungi.
This preservative also adds a bit of extra moisturization to products making it a great preservative for creams and lotions. This preservative can be used in a variety of skincare products.
If you’re looking for broad spectrum preservative, check out the guidelines below to see if this is the one for you!
Geogard Ultra Quick Facts
|Geogard Ultra is also known as:|
|NeoDefend, Gluconolactone SB|
|Geogard Ultra INCI:|
|Gluconolactone & Sodium Benzoate|
|COSMOS and ECOCERT Standards:|
|Geodgard Ultra is COSMOS and ECOCERT approved.|
|Geogard Ultra Ingredients:|
|Sodium Benzoate and Gluconolactone|
|Geogard Ultra Preservation Activity:|
|The two ingredients, sodium benzoate, and gluconolactone work together to provide broad-spectrum protection. It slowly releases gluconic acid over time, controlling the growth of bacteria and fungi.|
|Is Geogard Ultra Water Soluble?|
|Geogard Ultra is water-soluble.|
|Geogard Ultra can be used with pH levels 3-6.|
|Recommended Usage Levels:|
|Geogard Ultra has a recommended usage level of 0.75-2.0%|
What is Geogard Ultra?
Geogard Ultra is a powdered preservative with two ingredients that work together to control the growth of bacteria and fungi.
This preservative contains two organic acids that don’t do much by themselves, but when combined, work very effectively to preserve your skincare products.
It is compatible with a wide range of products and is fairly easy to use, making it a great natural preservative to help extend your products’ life.
Geogard Ultra protects your skincare products from growth of bacteria and fungi.
Is Geogard Ultra Safe?
Geogard Ultra is generally safe; it is easy on the skin and is often used in baby skincare products. It has an excellent safety profile and has a wide range of global regulatory acceptance.
Is Geogard Ultra Natural?
Geogard Ultra is a natural preservative that contains two organic acids. This preservative is also non-GMO.
It is a preservative that meets ECOCERT standards. It can be used in natural and organic products.
Geogard Ultra Uses
Geogard Ultra can be used in a wide variety of products such as:
- Body wash
- Baby wipes
- Baby Lotions
And much more! It is a very gentle preservative that can be used in products where gentleness is needed.
How to Use Geogard Ultra Preservative in Formulations
Geogard Ultra is a fairly easy to use preservative. It works best when used in formulations with a pH of 3-6.
It has a recommended use of 0.75-2.0% and can be added to a formulation at room or elevated temperatures.
To maximize the pH stability of the final formulation, it may be necessary to use a citrate buffer and adjust the pH:
- Dose the final product with the required level of Geogard Ultra® along with a 1.5x amount of sodium citrate. So, a 2% dose of Geogard Ultra® should be accompanied by 3% sodium citrate
- Mix thoroughly to ensure all solids have dissolved and adjust the pH of the formulation to 7.00-7.25 with 30% sodium hydroxide
- Finally, adjust the pH to desired final product pH (pH 5.4–5.5 is ideal) with dilute sodium hydroxide or citric acid solution
For most skincare products, you want a PH of 5-5.5. This can be adjusted using a pH modifier like Sodium bicarbonate or Citric acid.
Geogard Ultra Warnings
There is concern that Sodium Benzoate, if combined with L-Ascorbic Acid may form Benzene, which is a known carcinogen.
Ascorbic acid and bezoates on their own, doesn't always lead to the formation of benzene. It does require additional conditions such as heat, ultraviolet light and metallic ions in the formula.
Because their is still potential of benzene forming, it is recommended that you DO NOT use Geogard Ultra with L-Ascorbic Acid (Vitamin C). That's why we chose an alternative preservative for our DIY Vitamin C Serum, Dermosoft 1388 Eco.
It is always recommended to perform a patch test when using new skincare products after the preservative has been mixed into the product at the recommended usage level.
If you have any concerns about working with Geogard Ultra, call the manufacturer for clarification.
Where to Buy Geogard Ultra/Neodefend Preservative
NeoDefend | Lotion Crafter
Lotion Crafter offers a wide variety of ingredients for all of your formulating needs. They offer carriers oils, preservatives, exfoliants, anti-aging ingredients, butters and so much more. I order a lot of my supplies from Lotion Crafter. Lotion Crafter offers local & International shipping.
Geogard Ultra | Formulator Sample Shop
Formulator Sample Shop carries a wide range of formulating and skincare ingredients including carrier oils, butters, preservatives, and more. You are able to purchase the exact quantities that you need, and if there is something you need that you don’t see on their website, just contact them! They do offer International Shipping as well.
Other Natural Preservative Options
If Geogard Ultra doesn't work for your formulation, check out these other natural preservative options.
Sodium Benzoate Preservative Formulating Guidelines & Safety
Sodium Benzoate is a naturally derived anti-fungal preservative that is most effective at a very low pH in skin and hair products. It is most …
Suttocide A Preservative Formulating Guidelines & Safety
Suttocide A is a naturally derived preservative that is effective against gram-positive and gram-negative bacteria, as well as yeasts and molds. This makes it a …
Potassium Sorbate Preservative | Formulating Guidelines & Safety
Potassium Sorbate is the inactive salt of sorbic acid. When added to water, it releases sorbic acid, which protects from various molds and yeasts, and …
White Aspen Bark Extract Preservative Formulating Guidelines & Safety
White Aspen Bark Extract is a natural preservative that is made from the bark of the Trembling Aspen Tree. It has antimicrobial properties that can …
Euxyl K 903 Preservative Formulating Guidelines & Safety
Euxyl K 903 is a mild, liquid preservative that protects against a broad spectrum of bacteria, yeast, and molds. It can be used in a …
Dermosoft 1388 Eco Preservative Formulating Guidelines & Safety
Dermosoft 1399 Eco is a preservative that works with your skin’s natural pH to help keep your skincare products on your shelf longer. This preservative …
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