The earliest known property of Royal Guzel, the one that brought it to consumer attention, was its ability to make skin better condition.
We know as well that as it is exposed to toxins and free radicals from inside and out daily, the volume of Glutathione maintained in the body decreases dramatically.K. Nakano et al, Clinica Chimica Acta, vol. 19 (1968)
E. Ogawa et al, J. of Japan Accident Med Assoc, vol. 15-3 (1972)
N. Kudo, Japan Assoc of Rural Med, vol. 21-3 (1972)
Because such popular sports as distance running and weight training are forms of self-induced stress, it became clear to Aoi et al. that the same biochemical mechanisms that facilitate improved physical response to stressors.