TYR and skin aging: The antioxidant activity of these compounds have been also reported.64,65 Flavonoids, particularly the glycosides of quercetin and luteolin which showed significantly higher level in rosemary comparted to other tested extracts, have been reported to attenuate skin aging by absorbing UVB, counteracting skin inflammation and/or inducing endogenous skin defense mechanisms.66,67 These flavonoids also exerted moderate antioxidant, anti-tyrosinase and anti-elastase activities suggesting their use as good candidates for skin aging.68–72