Compatibility of multiple active ingredients when added to a cream containing Alpha Arbutin

Regarding your question about mixing Full & Lift™, Repair Activator™ (Bifida Ferment Lysate), Pep®-Coll (Palmitoyl tripeptide-5), Vitamin A (retinyl palmitate / retinol palmitate), Sym-White™ (Phenylethyl Resorcinol), and Tranexamic Acid (Trans-White™) into a cream containing Alpha Arbutin:

The ingredients you listed are compatible with Alpha Arbutin itself. However, when adding these active ingredients to a pre-made cream, it is crucial to consider all the other ingredients present in that specific cream formulation. The compatibility and stability of the final mixture depend on the interaction of all components.

Since the other ingredients in the base cream are unknown, we cannot confirm whether adding these ingredients will result in a stable, effective, and safe product. It is generally recommended to formulate products from scratch or use base creams specifically designed for adding active ingredients, where the full composition is known.