Preservatives and Usage Rates for Fluid Light and Light Invisible Sunscreen Bases

Regarding your inquiry about the Fluid Light Sunscreen and Light Invisible Sunscreen bases:

1. Do they already contain preservatives?

Yes, both products are formulated with a preservative system (such as Caprylyl Glycol) to ensure they remain stable and have a shelf life of approximately 2 years. They are ready-to-use bases.

2. Do you need to add more preservatives?

This depends on how much you customize the base:

• Adding < 5% additional ingredients: If you are only adding a small amount of fragrance or active extracts (that are already preserved), you generally do not need to add more preservatives.
• Adding > 5% or adding water-based ingredients: If you add a significant amount of other ingredients or any plain water, the concentration of the original preservative will be diluted. In this case, it is highly recommended to add a broad-spectrum preservative to ensure the safety and stability of your final product.

3. Recommended Usage Rates

• Fluid Light Sunscreen: Recommended to be used at 95-100% of the formula.
• Light Invisible Sunscreen: Recommended to be used at 90-100% of the formula.

Recommendation for additional preservation:
If you decide to add more ingredients and need extra protection, you can use a mild preservative like Mild Preservative (Eco) or Phenoxyethanol SA at a rate of 1% of the total weight of the ingredients you added.

Relevant Products:

• Fluid Light Sunscreen (Compare to Anessa)
• Light Invisible Sunscreen (Compare to Loreal UV Defender)