Fig. 5From: Enhancement of the antioxidant and skin permeation properties of eugenol by the esterification of eugenol to new derivativesa Mass of test substance in the acceptor fluid during the 24-h experiment: (1) Eugenol, (2) EDChA, (3) ETChA, (4) DChAA, (5) TChAA. b The penetration rate of test substances through the skin during the 24-h experiment: (1) Eugenol, (2) EDChA, (3) ETChA, (4) DChAA, (5) TChAABack to article page