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P&G Beauty scientists have been studying ways to harness the skin's natural healing processes in order to engineer better anti-aging products. Because skin is primarily comprised of protein, peptides or protein fragments could be the key. The pentapeptide, a chain of five amino acids, has been shown to stimulate the synthesis of several proteins found in the skin - including collagen, elastin and fibronectin - in ways typically associated with the skin's natural regenerative process. P&G Beauty scientists have conducted and presented several studies over the last few years that show Pal-KTTKS - a chain of five amino acids (KTTKS) modified with a lipid (palmitoyl) - reduces wrinkle length and depth by stimulating collagen growth.

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