So many peptides, so little time…

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Recently, a reader pointed out to me that palmitoyl pentapeptide-4, an ingredient in Olay 14-Day Intervention, is a component of Matrixyl, an established anti-aging peptide complex. After some reading, it turns out that Matrixyl is indeed the trademark for Palmitoyl Pentapeptide-4, owned by Sederma and Proctor & Gamble. According to the Sederma website (provided by the reader – thank you), Matrixyl is a combination of six different ingredients: Glycerin, Water, Butylene Glycol, Carbomer, Polysorbate 20, and Palmitoyl... read more