abstract |
The present invention features compositions comprising 5 at least one compound of the formula I or formula II: (I) R, N N N R3 wherein R1 , R2 , R3 , R4 , and R5 independently, are selected from the group consisting of hydrogen, C1 -C6 alkyl, Ci-C 6 15 hydroxyalkyl, or a cosmetically acceptable salt thereof, and the use thereof. |