Combining Phenylethyl Resorcinol and Matrixyl 3000 in a Formulation

Based on the properties of Phenylethyl Resorcinol and Matrixyl 3000, combining them in the same formulation may present compatibility challenges.

• Phenylethyl Resorcinol is known to potentially react with ingredients in the amino acid, urea, or protein groups, which can lead to issues like yellowing or separation of the product. Its optimal stability is typically within a pH range of 4-5.
• Matrixyl 3000 is a peptide blend (containing Palmitoyl Oligopeptide and Palmitoyl Tetrapeptide-7), which falls under the protein/amino acid category.

Due to the potential incompatibility between Phenylethyl Resorcinol and peptide ingredients like those in Matrixyl 3000, it is generally not recommended to combine them in the same formula to avoid stability problems.