Adding Oil-Soluble Actives to Serum Base

I was unable to find the specific product "ANR Serum Base (Compare to Estee)" in the database. Without the detailed description of this particular base, I cannot definitively say whether oil-soluble actives can be added or what the maximum percentage would be.

Generally, serum bases are formulated to be compatible with certain types of ingredients. Adding ingredients that are not compatible with the base's primary solvent system (e.g., adding oil-soluble ingredients to a water-based serum) can cause instability, separation, or affect the texture and efficacy of the final product.

To know for sure, you would need to check the product description or technical specifications provided by the supplier for the "ANR Serum Base (Compare to Estee)". This information would specify the recommended types of additives and their maximum inclusion levels.