Geogard Ultra® is a patented, synergistic blend consisting of Gluconolactone (polyhydroxy acid or PHA) and Sodium Benzoate. The synergy between these two ingredients, Gluconolactone and Sodium Benzoate, makes this preservative unique, allowing for its broad spectrum efficacy.
Organic acids often require a co-preservative or additional booster to provide an optimal performance, as they are too weak on their own. In this blend, the Gluconolactone works in conjunction with the sodium benzoate to perform as an efficient preservative booster that is also non-GMO. Geogard Ultra®’s Gluconolactone works by slowly releasing Gluconic Acid over time, which helps contribute to the preservation effect.
INCI Name: Gluconolactone (CAS: 90-80-2), Sodium Benzoate (CAS: 532-32-1) and Calcium Gluconate (CAS: 299-28-5)
Key Benefits of Geogard Ultra®:
Wide range of global regulatory acceptance
Broad spectrum activity
ECOCERT/COSMOS accepted, NATRUE and Soil Association approved
Wide applicability/compatibility
Easy to formulate
Added skin moisturization benefit
Applications Include:
Beauty & Care
AP/Deo
Baby Care
Bath & Shower
Color Cosmetics
Hair Care
Oral Care
Skin Care
Sun Care
Personal Hygiene
Hand Hygiene
Other Personal Hygiene Applications
Wipes, Tissue & Towel
Labeling Claims of Geogard Ultra®:
Cruelty-Free
Environmentally Friendly
Halal
Natural
Naturally Derived
Non-GMO
Organic
Sustainable
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Knowde Enhanced TDS
Identification & Functionality
| Chemical Compound Breakdown | CAS No. | EINECS No. | Percentage |
| D-glucono-1,5-lactone | 90-80-2 | 202-016-5 | 70–80% |
| Sodium benzoate | 532-32-1 | 208-534-8 | 22–28% |
| Calcium gluconate | 299-28-5 | 206-075-8 | 1% |
Geogard Ultra® Features & Benefits
- Has a wide range of global regulatory acceptance
- Broad spectrum activity
- ECOCERT/COSMOS-accepted , NATRUE-approved and Soil
- Vegan & Non-GMO compliant
- Offers complementary moisturizing benefit
- Halal certified
- Association-approved
- Wide applicability
- Added moisturization benefit
Geogard Ultra® is a synergistic, patented blend comprised of gluconolactone and sodium benzoate. What makes this preservative unique is the synergy between the two ingredients, allowing for its broad spectrum efficacy. Typically, organic acids on their own are too weak and often require a co-preservative or booster in order to perform optimally. The gluconolactone in this blend works together with the sodium benzoate to act as an efficient preservative booster that is also non-GMO. Geogard Ultra®’s gluconolactone works by slowly releasing gluconic acid over time, which helps contribute to the preservation.
Applications & Uses
- 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/gloss
- Lotion
- Make up remover
- Oil in Water
- Oral care
- Powder
- Shampoo
- Suncare
- Toner
- Water in Oil
- Water soluble
- Compatible with a wide variety of formulation ingredients as well as most types of cationic, nonionic and anionic systems
- Can be used effectively over a pH range of 3 to 6 and can be added at both room and elevated temperatures
- Soluble up to 4% in ambient water; it can be easily dispersed in glycols and alkyl sulfates
- To maximize the pH stability of the final formulation, it may be necessary to employ use of a sodium citrate buffer and pH adjustment as described below:
1. 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
2. Mix thoroughly to ensure all solids have dissolved and adjust the pH of the formulation to 7.00-7.25 with 30% sodium hydroxide
3. Finally, adjust the pH to desired final product pH (pH 5.4–5.5 is ideal) with dilute sodium hydroxide or citric acid solution
Properties
| Solvent | Soluble/Insoluble |
| Water | Soluble |
| Propylene Glycol | Dispersible |
| Glycerin | Soluble |
| Ethanol | Insoluble |
| Mineral Oil | Dispersible |
| Vegetable Oil | Insoluble |
| Silicone (Dimethicone) | Insoluble |
| Alkyl Sulfates | Dispersible |
Regulatory & Compliance
Europe
- Max concentration of sodium benzoate is based on benzoic acid
content - Max concentration of benzoic acid is 2.5% for rinse-off
- Max concentration of benzoic acid is 0.5% for leave-on
Japan
- 1.0% total max level of sodium benzoate
US
- 5.0% total max level of sodium benzoate
General
- Compliance with ECOCERT/COSMOS and Soil Association
Technical Details & Test Data
Microbiological Challenge Studies
Studies were run using different concentrations of Geogard Ultra® in various formulations to see efficacy against various bacteria and fungi. All samples were inoculated at the beginning of the study, sampled at 7, 14 and 28 days.
In these challenge studies, the bacterial pool consisted of S.aureus, P.aeruginosa and E.coli, and the fungal pool of C.albicans and A.brasiliensis.
| Ingredient | %W/W |
| Water, deionized | q.s |
| Caprylic Triglyceride | 20.00% |
| Sorbitan Monostearate | 2.00% |
| PEG Stearate | 1.50% |
| Glyceryl Stearate | 2.00% |
| Decaglyceryl Decaoleate | 5.00% |
| UV absorber | optional |
| Thickener | optional |
| Preservative | 1.5% Geogard Ultra® |
| Total: | 100.00% |
Moisturizing Cream: Bacterial Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 1 | Unpreserved Moisturizer | 9.5x10^6 | 4.2x10^5 | 8.9x10^4 | <10 |
| 2 | Moisturizer with 1.5% Geogard Ultra® | 6.5x10^6 | <10 | <10 | <10 |
Moisturizing Cream: Fungal Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 3 | Unpreserved Moisturizer | 8.8x10^5 | 1.7x10^5 | 1.9x10^5 | 2.8x10^5 |
| 4 | Moisturizer with 1.5% Geogard Ultra® | 2.1x10^5 | <10 | <10 | <10 |
| Ingredient | %W/W |
| Water, deionized | q.s |
| Sodium Lauryl Ether Sulfate | 15.0% |
| Triethanolamine Lauryl Sulfate | 10.0% |
| Cocamide DEA | 3.0% |
| Anhydrous Protein | 1.0% |
| 50% Aqueous Citric acid | pH adjuster |
| Preservative | 1.5% Geogard Ultra® |
| Total | 100.00% |
Anionic Protein Shampoo: Bacterial Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 1 | Unpreserved Shampoo | 9.5x10^6 | 4.76x10^7 | 1.06x10^8 | 2.0x10^7 |
| 2 | Shampoo with 1.5% Geogard Ultra® | 5.2x10^5 | <10 | <10 | <10 |
Anionic Protein Shampoo: Fungal Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 3 | Unpreserved Shampoo | 6.6x10^5 | 2.0x10^5 | 3.0x10^5 | 1.7x10^7 |
| 4 | Shampoo with 1.5% Geogard Ultra® | 4.4x10^5 | <10 | <10 | <10 |
| Ingredient | % W/W |
| Water, deionized | q.s |
| Polysorbate 80 (Glycosperse® O-20) | 0.5% |
| Lecithin | 1.0% |
| Distearyldimonium Chloride (Varisoft TA100) | 2.0% |
| Cetyl alcohol | 2.1% |
| Cetearyl alcohol | 1.5% |
| POE 4 Lauryl Alcohol (Ethosperse® LA-4) | 3.1% |
| 10% Aqueous Sodium Hydroxide | pH adjuster |
| Preservative | 1.0% Geogard Ultra® |
| Total: | 100.00% |
Hair Conditioner: Bacterial Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 1 | Unpreserved Conditioner | 8.3 x 10^6 | 4.8 x 10^7 | 2.4 x 10^6 | 9.0 x 10^6 |
| 2 | Conditioner w/ 1.0% Geogard Ultra® | 3.5 x 10^5 | < 10 | < 10 | < 10 |
Hair Conditioner: Fungal Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 28 |
| 3 | Unpreserved Conditioner | 4.2 x 10^6 | 1.8 x 10^7 | 8.3 x 10^5 | 3.7 x 10^5 |
| 4 | Conditioner w/ 1.0% Geogard Ultra® | 4.1 x 10^4 | 2.0 x 10^2 | <10 | <10 |
| Ingredient | %W/W |
| Water | q.s to 100 |
| Decyl glucoside (Plantaren® 2000) | 0.25% |
| Polysorbate 20 (Glycosperse® L-20) | 0.30% |
| Disodium EDTA | 0.20% |
| Sodium citrate | 3.00% |
| Geogard Ultra® | 2.00% |
| Total | 100.00% |
(pH adjustments for in-situ buffer)
Wet Wipe Liquor: Bacterial Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 21 | Day 28 |
| 1 | SPC nonwoven (unpreserved) | 1.6 x 10^6 | 3.1 x 10^5 | >3.9 x 10^6 | >3.9 x 10^6 | >3.9 x 10^6 |
| 2 | SPC nonwoven with 2% Geogard Ultra® | 2.1 x 10^6 | <100 | <100 | <100 | <100 |
| 3 | Spunlace nonwoven (unpreserved) | 2.6 x 10^6 | 3.0 x 10^6 | >3.9 x 10^6 | >3.9 x 10^6 | >3.9 x 10^6 |
| 4 | Spunlace nonwoven with 2% Geogard Ultra® | 1.9 x 10^6 | <100 | <100 | <100 | <100 |
Wet Wipe Liquor: Fungal Counts (CFU/gram)
| Sample# | Test Samples | Day 0 | Day 7 | Day 14 | Day 21 | Day 28 |
| 1 | SPC nonwoven (unpreserved) | 7.7 x 10^4 | 2.4 x 10^6 | 6.4 x 10^6 | 4.1 x 10^5 | 1.2 x 10^6 |
| 2 | SPC nonwoven with 2% Geogard Ultra® | 7.8 x 10^4 | 1.0 x 10^2 | <100 | <100 | <100 |
| 3 | Spunlace nonwoven (unpreserved) | 1.2 x 10^5 | 5.5 x 10^5 | 8.8 x 10^5 | 1.1 x 10^6 | 1.2 x 10^6 |
| 4 | Spunlace nonwoven with 2% Geogard Ultra® | 9.5 x 10^4 | <100 | <100 | <100 | <100 |
There is also a moisturization benefit on the skin with the Geogard Ultra®. In the same moisturizing cream formulation used to demonstrate preservative efficacy, Geogard Ultra® produced a quantitative moisturization benefit to the skin. Over a period of time, Geogard Ultra® produced a moisturizing effect that was superior to the use of 2 % glycerin.
Packaging & Availability
Regional Availability