Geogard ECT Preservative Formulating Guideline & Safety
Geogard ECT is a broad-spectrum preservative that protects from bacteria, yeasts, and molds. It is a natural preservative that can be used in organic products.
This preservative can be used in various skincare products, and its broad pH range compatibility makes it easier to add to formulations than preservatives that are more pH dependent.
Geogard ECT Quick Facts
| Geogard ECT Broad Spectrum Preservative is also Known As: |
| Preservative Eco |
| Geogard ECT INCI: |
| Benzyl alcohol, Salicylic acid, Glycerine, Sorbic acid |
| COSMOS and ECOCERT Standards: |
| Geogard ECT meets the COSMOS & ECOCERT standards. |
| Geogard ECT Ingredients: |
| Benzyl alcohol, Salicylic acid, Glycerine, Sorbic acid |
| Geogard ECT Preservation Activity: |
| Broad-spectrum preservative for bacteria, yeast, and molds. |
| Is Geogard ECT Water Soluble? |
| Geogard ECT is somewhat water-soluble, but there have been instances where it doesn’t seem completely water-soluble. |
| PH Compatibility: |
| Geogard ECT is compatible with pH levels from 3-8 |
| Recommended Usage Levels: |
| Geogard ECT usage recommendations range from 0.6-1% |
What is Geogard ECT?
Geogard ECT is a preservative that is composed of Benzyl Alcohol, Salicylic Acid, Glycerine, and Sorbic Acid.
These are all ingredients that are widely used in skincare products. This preservative has a wide safety margin and can be integrated into a variety of products.
Geogard ECT has a wide range of efficacy and offers protection from gram-positive and gram-negative bacteria as well as yeasts and molds.
This preservative has little odor and little color, making it easy to mix into fragrance-free products or products with a mild or natural color.
Geogard ECT also has a wide pH range that it is compatible with, making it easier to add to products than preservatives that are more pH-sensitive!
Is Geogard ECT Safe?
Geogard ECT has an excellent safety profile; it also has a wide range of global regulatory acceptance, which means it is widely accepted as a safe product.
It is paraben and formaldehyde-free; Geogard ECT is made from four ingredients that are often used in skincare products and cosmetics that are generally regarded as safe.
Is Geogard ECT Natural?
Geogard ECT is made of Benzyl Alcohol, Salicylic Acid, Glycerine, and Sorbic Acid; these are all components that all occur in nature.
It is a broad-spectrum preservative that meets ECOCERT standards. It can be used in natural and organic products.
Geogard ECT Uses
Because of its general compatibility with other ingredients, Geogard ECT can be used in a variety of products such as:
Geogard ECT is a good fit for facial skincare formulas, including sensitive-skin products, when used within its recommended rate and pH range. As with any preservative system, natural doesn't automatically mean gentle — benzyl alcohol and salicylic acid can be sensitizing at higher concentrations, which is exactly why staying within the 0.6-1% usage rate matters.
And much more!
How to Use Geogard ECT Preservative in Formulations
It is recommended to use Geogard ECT as 0.6-1.0% of your formulation. It is fairly easy to add and can be added directly to many systems.
If you have an emulsifying system, it can easily be added after emulsion at a temperature below 45°C.
*Pulled from Formulator Sample Shop
You will want to check your products’ PH level to ensure it is within the compatible range of 3-8 before adding your Geogard ECT.
Once the preservative has been added at the recommended percentage, recheck the PH level.
Geogard ECT is naturally acidic and can noticeably lower your formulation's pH when added — sometimes below 4 — so don't skip that after-addition pH check. For storage, keep Geogard ECT itself in a cool, dark, dry spot, and plan to use it within about 12 months of purchase for best performance.
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.
Is Geogarg ECT Water Soluble?
Although this preservative does claim to be water soluble, it contains benzyl alcohol, which is not completely water soluble.
I would not recommend using Geogard ECT in completely water based products like toners, spritzers or aftershave unless you will be adding a solubilizer.
Geogard ECT Warnings
Geogard ECT is generally regarded as a safe preservative to use in your DIY skin care products. Always wear gloves when handling and preparing Geogard ECT for use, be sure to clean up any spilled product.
It is important to carefully measure all preservatives to ensure that you do not use too little or too much.
Some people with sensitive skin may react to this preservative. It is always recommended to do a patch test with any new ingredients.
Note: Should not be used in products for children under 3 except for shampoo because of it contains salicylic acid.
One more thing to keep in mind: if your formulation already includes another salicylic acid ingredient — like a BHA exfoliant — the salicylic acid in Geogard ECT adds to that total. Regulatory limits on total salicylic acid content in a finished product (generally around 2%) apply to the combined amount, not just your active ingredient, so factor Geogard ECT's contribution in before finalizing your recipe.
If you have any questions about safety or measurements for your preservatives, you should contact the manufacturer.
Where to Buy Geogard ECT Preservative
Geogard ECT - 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.
Preservative Eco / Geogard ECT | Soapmaker's Store (UK)
Based in the United Kingdom, Soapmakers Store is a family owned business specialising in the sourcing and supply of premium quality ingredients to the Cosmetic, Toiletry, Aromatherapy, and Soapmaking Industries. With over 40 years experience in the Natural Ingredients Industry, they will endeavour to be your 'one stop shop' for quality raw material supplies. They do offer shipping outside of Europe, but there will be additional charges.
Preservative Eco - Naissance (EU)
If you are in Europe/UK Naissance carries Preservative Eco, which includes the same ingredients as Geogard ECT.
Preservative Eco - Skin Dewi
If you are in Asia, Skin Dewi carries Preservative Eco, which includes the same ingredients as Geogard ECT.
Geogard ECT FAQs
Is Geogard ECT safe to use in products for kids?
Not for children under 3, with one exception — shampoo. That's because Geogard ECT contains salicylic acid, and salicylates carry specific safety guidance for very young children. For kids over 3, and for shampoo at any age under 3, it's considered appropriate to use.
Can I use Geogard ECT in a toner or facial mist?
You can, but it needs a little help. Geogard ECT contains benzyl alcohol, which isn't fully water-soluble on its own — so in a mostly-water formula like a toner or spritzer, it can separate out instead of staying evenly distributed. Add a solubilizer to keep it dispersed, or reach for a preservative that's built for fully aqueous systems if you'd rather skip that extra step.
What's the difference between Geogard ECT and Geogard Ultra?
They share a brand name but aren't the same preservative. Geogard ECT (Benzyl Alcohol, Salicylic Acid, Glycerin, Sorbic Acid) works across a pH 3–8 range and performs best in emulsified, oil-containing formulas. Geogard Ultra uses a different composition, works in a narrower pH range, and is generally more water-friendly. If you're trying to decide between them for a specific formula, Geogard Ultra Preservative walks through its own usage rate and pH details so you can compare side by side.
Will Geogard ECT change the pH of my finished product?
It can. Geogard ECT is naturally acidic, and adding it can lower your formulation's pH — sometimes below 4. Always check your pH after incorporating it, not just before, so you know where your finished product actually landed.
I'm already using a salicylic acid exfoliant in my formula — can I still use Geogard ECT?
You can, but do the math first. Because Geogard ECT itself contains salicylic acid, its contribution adds to the total salicylic acid concentration in your finished product, and regulatory limits on total salicylic acid content (generally around 2%) apply to the combined amount, not just your active ingredient. If you're already formulating with a salicylic acid exfoliant, factor in what Geogard ECT is adding before finalizing your percentage.
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