Euxyl K903 (Broad-Spectrum Preservative for Water-Based Formulations)
Euxyl K903 (Broad-Spectrum Preservative for Water-Based Formulations)
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Essentially Natural Euxyl K903 is a liquid preservative system for cosmetic formulations, used to help protect products against bacteria, yeasts, and moulds. It is suitable for leave-on and rinse-off products and is commonly chosen when formulators want a broad-spectrum preservation option for creams, lotions, shampoos, and similar products. This ingredient works best in formulations with a pH of up to 6.
♡ Why we love it: It is a practical preservation option for makers who need dependable performance without overcomplicating a formula. We chose to offer it because preservation is a real formulation need, and this system gives product developers a clear, established option for a wide range of cosmetic products.
Key properties
- INCI Name: Benzyl Alcohol, Benzoic Acid, Dehydroacetic Acid, Tocopherol
- Form: Liquid
- Typical Usage Rate: 0.4 - 1.2%
- Shelf Life: 18 months
- Storage: Protect from frost, heat, and direct sunlight. Store at room temperature in the original container
- Suitable For: Leave-On And Rinse-Off Cosmetic Products
What it's used for
- Preserving creams and lotions
- Preserving shampoos and bath products
- Broad-spectrum support in cosmetic formulations
- Leave-on personal care products
- Rinse-off personal care products
Who it's for
- Formulators who need an established preservative system
- Makers creating leave-on and rinse-off cosmetic products
- Product developers working within pH systems up to 6
- Water-only products without a full preservation strategy
- Food applications
- Use as a finished product on its own
Euxyl K903 Is For:
Euxyl K903 Is Not For:
How to use it
- As a Preservative: Add according to the needs of your formula and the relevant regulatory limits.
- As a Cosmetic Formulation Ingredient: Use in compatible leave-on or rinse-off systems with suitable pH control.
- Processing Tip: Check final product pH and compatibility during your stability and preservation testing.
Safety instructions
- For external use only. Do not ingest.
- Avoid contact with eyes and skin in concentrated form
- Wear suitable handling protection during formulation
- Keep the container tightly closed when not in use
- Store away from frost, heat, and direct sunlight
Faqs
Q: What type of ingredient is Euxyl K903?
A: It is a preservative system used to help protect cosmetic products from microbial spoilage.
Q: Can it be used in both leave-on and rinse-off products?
A: Yes. It is commonly used in both leave-on and rinse-off cosmetic formulations.
Q: Why does final pH matter?
A: This preservative system is intended for formulations with a pH up to 6, so final formula pH should be checked during development.
