medik8 c tetra luxe lipid vitamin c enhanced radiance serum C-Tetra® Brightening – a vitamin C serum for your face clinically proven to reduce the appearance of wrinkles and dark spots in just four weeks C-Tetra® Luxe Vitamin C Brightening

The method can assay GSH in whole blood, plasma, serum, lung lavage fluid, cerebrospinal fluid, urine, tissues and cell extracts and can be extended for drug discovery/pharmacology and toxicology protocols to study the effects of drugs and toxic compounds on glutathione metabolism

Results of preclinical and in vitro studies have shown that activation of the IRR requires concentrations of ARA 290 greater than or equal to ~1 nmol/L (~1.3 ng/mL) (14)

People use it for detox support, immune function, skin brightening, liver health, and fighting oxidative stress

Retrieved 11 April 2016

How awesome that they were able to include this in their line

Quenching Free Radicals: By reducing oxidative stress, glutathione lowers the signals that tell melanocytes to produce more pigment