The most commercially proven peptides for lip treatments are Palmitoyl Tripeptide-1, Palmitoyl Tetrapeptide-7 (combined in Matrixyl 3000), and Acetyl Hexapeptide-3 (Argireline). Each requires careful pH management and antioxidant protection to remain stable in a lip base. A qualified cosmetic chemist on AJ Cosmo Labs can provide stability data for your specific formula.
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