







Preservative ECO (Use as a Geogard ECT)
What is it? |
It is a liquid natural broad-spectrum preservative. It is also called as Geogard ECT, Mikrokill ECT, and Plantaserv M. The novel composition of this antimicrobial blend offers broad spectrum protection in a diverse range of products, against Gram-positive & Gram-negative bacteria, yeast, and molds. It also has a low odor profile making it the ideal choice for fragrance-free and fragrance-sensitive systems. |
INCI | Benzyl Alcohol (and) Salicylic Acid (and) Glycerin (and) Sorbic Acid |
Usage rate | 0.6–1% |
Applications | Anhydrous, Body Butter, Body wash, Conditioner, Cream, Deo/ Anti-Perspirant, Eye creams/gels, Eye shadow, Face Lotion, Face wipes, Facial Cream, Foundation, Feminine hygiene, Hair gel, Hand soap (non anti-bac), Lipstick/gloss, Lotion, Make up remover, Mascara, Oil in Water, Oral care, Powder, Shampoo, Suncare, Toner, Water in Oil. |
Scent | Almondy/marzipan-y |
pH | Effective from 3–8.
Preservative ECO will cause the pH of your formulations to drop. |
Solubility | Said to be water soluble, though some have reported challenges with it in entirely hydrous products. |
Why do we use it in formulations? | Preservative ECO protects our formulations from microbial spoilage (bacteria, yeast, fungus); we have found it to be an effective and easy-to-use natural preservative option. |
Do you need it? | You should have at least one broad-spectrum preservative; Preservative ECO is a good choice if you prefer natural preservatives. |
Refined or unrefined? | Preservative ECO only exists as a refined product. |
Strengths |
Unlike many natural preservatives, Preservative ECO has a maximum functional pH range of 8 (most natural preservatives require an acidic pH to function well). The manufacturer lists lip products as a possible application. |
Alternatives & Substitutions | You’ll need another broad-spectrum preservative. Liquid Germall™ Plus is an effective, versatile choice, but it isn’t natural. Natural alternatives include Preservative P-gard 221 (Use as Geogard 221), though it have a lower effective pH range. |
How to Work with It | Include Preservative ECO in the cool down phase of your formulations, and ensure the final pH of the formulation is the in 3-8 range. |
Tips, Tricks, and Quirks | Looking for a natural way to add an almondy scent to your formulation? Preserve it with Preservative ECO (Use as Geogard ECT)! |
Benefits |
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PLEASE NOTE: This is a cosmetic raw material and it is meant for external use only in cosmetic formulations. It should not be ingested. Product image and packaging shown above is a general representation of product. Product color may vary. Our products are for external use only, unless otherwise indicated. This information is for information purposes, nothing on the Purenso website should be considered, or construed, as medical advice.





This product is a cosmetic raw material and is intended for external use only in cosmetic and personal care formulations. It is not intended for internal consumption or medicinal use.
- Do not ingest.
- Keep out of reach of children.
- Avoid direct contact with eyes.
All product images are for illustrative purposes only. Actual product color, texture, or packaging may vary from batch to batch.
Information provided on this website is for educational purposes only and should not be considered or interpreted as medical advice.
While we do not offer products for internal use, we source only high-quality, pharmaceutical or food-grade ingredients. Ingredient purity and performance are critical in cosmetic applications, just as they are in ingestible products.
Please note:
Just because two products have the same name or CAS number does not guarantee the same grade, purity, or effectiveness. Always choose trusted suppliers. Choose Purenso for premium-grade ingredients you can rely on.
