Group 1

Negative control

No topical treatment

Group 2

Peeling control

Peeling

Group 3

Curcumin

Once-daily administration of curcumin formulation

Group 4

Resveratrol

Once-daily administration of trans-resveratrol formulation

Group 5

Post-peeling curcumin

Peeling, followed by once-daily administration of curcumin formulation

Group 6

Post-peeling resveratrol

Peeling, followed by once-daily administration of trans-resveratrol formulation

Group 7

Post-peeling curcumin + resveratrol

Peeling, followed by once-daily administration of curcumin + trans-resveratrol formulation