can't read?
Didodecylamine is a secondary amine. It is reported as standard amine enhancer and its dermal enhancement properties has been studied using in vitro diffusion cell techniques.
D 5278 (OTTO) Didodecylamine, 97% Cas 3007-31-6 - used to promote the crystal growth of 2D nanosheets of GdOCl with approximately square cross sections.