The review indicated that PL supplementation acts at a molecular and cellular level to enhance endogenous antioxidant systems and inhibit generation of reactive oxygen species, which reduces UV-mediated oxidative DNA mutations.
It was also shown to speed up the removal of UV-induced photoproducts.
PL demonstrated some protective effects against photoageing and PUVA-induced phototoxicity by reducing UV-induced inflammatory responses and inhibiting extracellular matrix remodelling. The authors concluded that PL extracts could potentially be administered systemically as a sun-protective agent and could have benefits over the use of suncream in the prevention of skin cancer.
El-Haj N, Goldstein N. Int J Dermatol 2015; 54(3): 362-6