Leucidal Complete Preservative for Cosmetics
Broad Spectrum Leucidal Complete Antimicrobial
Antimicrobial for skincare
How do I add Leucidal Complete
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Leucidal Complete

Accepted on the Whole Foods Premium Preservative List
Leucidal® Complete is the first all-natural broad-spectrum antimicrobial to keep your formulations free of bacteria, yeast, fungi, and mold.
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Product Description

Leucidal® Complete Broad-Spectrum Anti-Microbial

The best all-natural broad-spectrum antimicrobial alternative to synthetic preservatives

Now available in three sizes! .5 oz. Glass dropper bottle, 4-ounce mini jug, or 16-ounce White jug!

Finally, an all-natural broad-spectrum antimicrobial protects against bacteria, yeast, and mold! Leucidal® Complete is the first of its kind to provide effective protection from antimicrobial peptide ferment.

Now you can have complete protection for water-based formulas as well as oil-based. In addition, Leucidal® Complete incorporates easily into your formulations at room temperature.

If you have used Leucidal® Liquid, you are going to love the complete version!

Leucida® Liquid is a ferment of lactic acid bacteria (leuconostoc kimchii); then, another antimicrobial is obtained from fermenting Cocos nucifera (Coconut) with Lactobacillus. The result is a revolutionary natural broad-spectrum antimicrobial without synthetic ingredients.

These two compounds combine forces for their exceptional protection against bacteria, yeast, and mold.


Leucidal® Complete is a broad-spectrum antimicrobial with anti-bacterial properties that can safely and efficiently prolong the shelf life of natural and organic cosmetics and skincare products.

Sample Recipes:

Do you love making your own products? Check out some of our DIY formulas for anti-aging oils, serums, scrubs, and more. You can add Leucidal® Complete to any of these and keep it fresh and free of bacteria, yeast, and mold for quite some time.

Want to add Leucidal® Complete to an existing skincare product to keep it fresh longer? Just follow our directions for adding a serum booster. It’s the same simple process!

Leucidal® Complete, a natural antimicrobial, today to get more life out of your organic skincare products!

How to Use

Add a 2-4% concentration of Leucidal® Complete to your DIY cosmetic and skincare formulations. Beginning formulators should use a 4% concentration. Blend until well mixed.

Leucidal Complete may be hazy. To reduce haze, bring it to room temperature.

Cooler temperatures will cause the product to clump. If your product has lumps or is solid, use a warm water bath to return the product to a liquid state. Do not use the product if it is not a liquid. Doing so can cause haziness, foam, or other issues in your final formulation.

  • Leucidal Complete protects from bacteria, yeast, and mold.
  • For oil-based formulas, try Leucidal Liquid.
  • Use Leucidal Max as an all-natural preservative alternative, as it uses Lactobacillus.

All formulas should be safety tested. A challenge test can determine if the product is preserved adequately and for how long. When finished, store in a cool, dry place.

Warnings: For external use only. Leucidal® Complete is approved for use with organic cosmetics and is not used for foods or beverages. Do not ingest.

Usage Rate: 2 to 4%
Appearance: Cloudy to a clear liquid
Solubility: Water-soluble
Stability: Heat stable up to 158 degrees Fahrenheit or 70 degrees Celsius.
Vegan Compliant
Formulated without these allergens: Eggs, Corn, Fish, Lactose, Milk, Palm Oil, Peanuts, Shellfish, Soybeans, Tree Nuts, and Wheat.

Store at room temperature. Place in the refrigerator upon arrival for long-term storage.

Our .5-ounce blue glass dropper bottle of Leucidal Complete will make approximately 750ml or 25 ounces at a 2% concentration.

When used at a 4% concentration, the Leucidal® Complete will make approximately 375ml or a 12.5-ounce batch.

The 4-ounce size would make 200 ounces with a 2% concentration. At a 4% concentration, it would create approximately a 100-ounce batch.

The 16-ounce white jug is large enough to make about 800 ounces with a 2% concentration. At a 4% concentration, it would produce approximately a 400-ounce batch.

Leucidal® is a trademark of Active Micro Technologies.

Lotion Making Tips
  • Add a 2-4% concentration of Leucidal Complete to your DIY cosmetic and skincare formulations. Blend until well mixed.
  • Leucidal Complete may be hazy. To reduce haze, bring it to room temperature.
  • Leucidal Complete protects from bacteria, yeast, and mold, but formulas should be safety tested.
  • For oil-based formulas, try Leucidal Liquid.
  • Use Leucidal Max Lactobacillus Ferment for an all-natural preservative alternative.

When finished, store in a cool, dry place.


INCI: Leuconostoc/Radish Root Ferment Filtrate & Lactobacillus & Cocos Nucifera (Coconut) Fruit Extract.

Download Leucidal Complete MSDS


Leucidal® Complete is approved for use with organic cosmetics and is not used for foods or beverages. Therefore, this is not for consumption. For more information on formulating, view our formulating guide.

Do not directly apply to your skin. Instead, this product should be added to a formulation at the recommended usage rate.

For external use only, all products are cosmetic grade.

The Food and Drug Administration has not evaluated the statements contained herein. This product is not intended to diagnose, treat, cure, or prevent disease. Always consult with your professional skin care provider.

California Prop 65 Statement: The following statement is made to comply with the California Safe Drinking Water and Toxic Enforcement Act of 1986. This product is not known to the State of California to cause cancer, birth defects, or other reproductive harm.

Effective Naturals

Coconut ferment radish root ferment

Customer Reviews

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Ask a Question
  • Is this good to use with body butter?

    Yes, any product that can come into contact with water or fingers should use a broad-spectrum antimicrobial like Leucidal Complete.

  • My Leucidal Complete arrived solid due to the cold weather. When I place it in a water bath it is still chunky. How do I use it now?

    Great questions! Leucidal Complete can be very finicky with colder temperatures. First, make sure that the water bath is above 95 degrees. For the best results, we recommend 104 degrees. You can also use the microwave at 15-30 second intervals until completely liquid. Once the solution is back to a complete liquid, it can then be added toward the end of the formulation. Add at 40 degrees celsius and mix until homogeneous.

  • My formula is hazy after adding. Is there any way to make it clear?

    You can also improve the clarity of your formula by using a stabilizing agent. Using a 2% concentration of Sodium Citrate or Sodium Chloride with .5% Xanthum Gum.

  • Are there any ingredients that Leucidal Complete is not compatible with?

    Leucidal Complete can be incompatible with highly anionic ingredients including many carbomers. The thickeners that are recommended are Hyaluronic Acid and Xanthan Gum.

  • I recently started using your Leucidal Complete (I’m in my 2nd purchase now). I was wondering, does it need to be refrigerated after opening? For my 1st purchase, I did place it in the fridge after opening, sure it clumps up, but I just let it thaw out when I’m ready to use it. I have no problem with that. However, if it does not require refrigeration, I’d like to know so then I know I can safely leave it in the pantry? Thanks in anticipation of your response & keep up the good work. It took me a lot of research to find the right product for me & understand how they vary & work. I love your product.

    No, you should not store Leucidal Complete in the fridge. Instead, store at room temperature, as the label states.   If Leucidal Complete is too cold before use, it can clump, crystallize, or become solid.    This doesn’t affect the product. However, you will need to use a warm water bath to solidify Leucidal Complete before using it in your formulations.

    Never freeze Leucidal Complete or any Leucidal product.

  • The drop-down menu for 4 oz says $16 and when I click on it it changes to 24.95...why?

    The base price for the .5 ounce Leucidal Complete is $8.95. When you choose a larger, 4-ounce size, the price is an additional $16.00, for a total of $24.95. The shopping cart adds a larger size to the base price. This way, we can offer multiple sizes.

  • Does this have a scent?

    There is a very faint scent. It should not change the scent of your final product.

  • We have a few products in development. 1 being a rose water toner. Seeing the rose water is clear, is it better to use the Leucidal Liquid to avoid possible haziness, or is it still best recommended to use the stronger antimicrobial Leucidal Complete? Thank you

    Yes, you are correct. If you are an advanced formulator creating skincare products, you can easily use a 2-4% Leucidal Liquid in your formulations. However, we do not recommend this for beginners.

    Leucidal Liquid is the easiest product to use in terms of creating clear toners. However, remember that all Leucidal products can be potentially incompatible with highly anionic ingredients (some thickeners). Therefore, monitor and test all components for compatibility in your formula- not just one ingredient.

    Always test the compatibility of your ingredients before making an entire batch! We suggest using a small amount of Rose Water and adding the Leucidal Liquid to the formula at a .5% concentration. Monitor the recipe; if it stays clear, continue adding small amounts until you reach the desired concentration. 

    If the recipe is cloudy or you see haziness, consider using a solubilizing agent to improve clarity.

    We would also recommend using Leucidal Liquid with an additional preservative to protect your water-based formula fully.

  • My product crystallized. Can I heat it up?

    Please read all instructions included in the Product Brochure and Instructional Guide.

    When Leucidal Complete gets cold it can crystallize or become solid. This is prevalent in the fall and winter months due to cooler temperatures.

    It should be added to your formulation at 95 -104 degrees. You should not use the product in your formulation unless it is a complete liquid.

    To heat up and liquefy Leucidal Complete, use a double boiler or microwave at 30 seconds to 1-minute intervals, we have found that 2-3 minutes is all that is needed.

    If you are using the smaller, .5 ounce glass bottle, you can simply run it under hot water until liquid.

  • What is the useable PH range?

    The Ph of Leucidal® Complete is 7.0-10.00. It has been shown to be heat stable up to 158 degrees in products with a PH of 3-8.

  • How long is the shelf life with this added?

    To get an accurate shelf-life, you will need to have your formula tested in a lab. Leucidal Complete can protect your formula for approximately 12 months, but that will vary depending on the formula.

  • What is the difference between leucidal sf complete with leucidal complete?

    Leucidal SF Max is a ferment of Lactobacillus. It provides stronger protection for your homemade DIY formulas than Leucidal Liquid.
    Leucidal Complete is a combination of Radish Root ferment, Lactobacillus, and Coconut for the strongest natural protection.