General Information about Serum Bases

Generally, ready-made serum bases already contain essential basic components for a serum texture, such as water, humectants, thickeners, and possibly some basic skin nourishing ingredients, as well as preservatives in appropriate amounts to ensure product stability and safety.

Adding Active Ingredients

The ability to add additional active ingredients to a ready-made serum base, and the maximum amount that can be added, primarily depends on the specific formula of that base. Generally, the addition of active ingredients should not exceed 10-20% of the total base amount to prevent the serum texture from losing stability or separating. However, this number is just an estimate. Adding some active ingredients in high amounts can significantly alter the base texture. It is always recommended to test with small amounts first.

Using Additional Preservatives

Most ready-made serum bases already contain preservatives in sufficient amounts for preserving the base itself. However, when adding active ingredients or other components to the base, it may be necessary to consider adding additional preservatives, especially if the added active ingredients are natural extracts or substances that might promote microbial growth. Adding additional preservatives will help ensure the safety and extend the shelf life of the finished product. It is important to choose preservatives that are compatible with other ingredients in the formula.

Since specific information for "ANR Serum Base (Compare to Estee)" was not found, it is not possible to provide exact details on its composition, maximum active ingredient percentage, or the necessity of adding extra preservatives for this specific base.