If you are making fresh skincare used right after it's made, you do not need to add a preservative. However, if you are considering storing your product for more than a day or 2, there is no doubt about it; you need to use a preservative.
Antimicrobials help protect your DIY formulas from microorganisms like bacteria and fungi that can contaminate your product. When using an antimicrobial, you will need to consider if it's a broad spectrum and work on all contaminants, including both bacteria and fungi that can present themselves.
Below is a list of different preservatives and the manufacturers that produce them. Even though it's not an exhaustive list, it does show many options when choosing a natural antimicrobial over a synthetic preservative.
Do keep in mind that not all antimicrobials are broad spectrum. While some are only effective on bacteria, others are only effective on fungi. So it is essential to do your diligent research to see what will work best for your products.
At Skin Perfection, we offer Leucidal® Liquid or Radish Root. It is a mild, broad-spectrum antimicrobial that can protect your custom formulations from microorganisms.
For water-based products, use a broad-spectrum like Leucidal® Complete. For Oil-based cosmetics, use Leucidal® Liquid or Max.
Radish Root, Complete, SF Max are recommended to be used at a 4% concentration for beginning formulators. It is easily added to your formulation at room temperature.
For an all-natural broad-spectrum antimicrobial that protects against mold and fungi, our Leucidal® Complete is for you!
If you are an experienced lotion maker and know how the antimicrobial will perform with your custom formula, it's recommended to use a 2-4% level of Leucidal® Liquid or Complete.
Typically, the shelf life of your product will be extended for up to 12 months. But it is your responsibility to test the shelf-life. If you plan on placing your custom formula on the market, we recommend every recipe undergo cosmetic challenge testing.
To add Leucidal® Liquid to your product:
During the cooling phase or at the end of formulation, Add a 4% concentration of the Radish Root Ferment. For best results, use cold-pressed or incorporate when the formula is below 158 degrees Fahrenheit.
To add Leucidal® Complete:
Follow the same instructions as the Radish Root Ferment. Leucidal® Complete can be hazy. Make sure that you add it when the formula is below 105 degrees Fahrenheit. Incorporated with a handheld mixer into your formulations until transparent.
What are the differences In Leucidal Products?
Leucidal® Liquid provides mild broad-spectrum antimicrobial protection and is produced by fermenting the radish root in Leuconostoc kimchi. It does not provide fungal protection. Radish Root is the original product that started the natural antimicrobial revolution.
Leucidal® Complete: provides broad-spectrum antimicrobial and protects against mold, yeast, and fungus all in one product. It is a combination of fermented radish root and fermented lactobacillus with coconut (Cocos Nucifera).
Leucidal® SF Max: probiotic-based protection created by fermenting Lactobacillus. Lactobacillus provides strong broad-spectrum protection and is part of the lactic acid bacteria. It works by acidifying the environment, which restricts the growth of microorganisms. It does not provide fungal protection.
What Leucidal® Product Should I use?
For water-based formulas, use Leucidal® Complete.
If you are making an oil-based formula, use the Leucidal® Liquid Radish Root Ferment.
Any formulation needing strong broad-spectrum antimicrobial protection from Lactobacillus uses Leucidal® SF Max. For fungal protection, use gluconolactone.
This video will show you how to naturally preserve an anti-aging serum with an antimicrobial called Leucidal® Liquid or Radish Root. It will help your homemade serums last longer and stay fresher.
At Skin Perfection, we offer Leucidal® Liquid in a half ounce size. We also have it available in a larger 4 ounce or 16-ounce size. This way, if you only make a serum once every two to three months, you have the smaller size option. When you begin making larger batches and giving away as gifts or starting your line, you will want to purchase a larger size.
So I have a one-ounce anti-aging serum here, and we need to add the Leucidal® Liquid at a 4% concentration. If you are a beginner, we highly suggest using the 4% concentration. Expert formulators can use a lower concentration. But still, they need to be very cautious as Radish Root is a mild antimicrobial.
If you want to make a water-based product, we highly recommend using the Leucidal® Complete as it will provide broad-spectrum protection against yeast, fungi, and mold.
A 4% concentration add to a 1-ounce product would be approximately 19 drops. Then, blend your mixture until well mixed, which is usually about two minutes.