L-Serine, N2-(1-Oxotetradecyl)-L-L-Lysyl-L-Threonyl-L-Threonyl-L-Lysyl-CAS：1392416-25-9

Amfani da palmitoyl pentapeptide 4
Matrixyl, wanda kuma aka sani da Palmitoyl pentapeptide-4 (palmitoyl pentapeptide-3 kafin 2006), wani matrikin ne da ake amfani da shi a cikin kayan kwalliyar riga-kafi.An ƙaddamar da shi a cikin 2000 azaman sinadari mai aiki don masana'antar kulawa ta sirri ta masana'antar kayan kwalliyar kayan kwalliyar Faransa Sederma SAS ƙarƙashin sunan kasuwanci Matrixyl.