glutathione is vitamin c HK Vitals Formula for Radiant Skin 25% Vitamin C + Glutathione

Reduced glutathione with sulfurs lone pair electrons displayed by dots

Clear solutions turning yellow, brown, or pink suggest chemical modifications have occurred

They may use diluted, counterfeit, or contaminated glutathione that puts your health at serious risk

Also, as someone else said, make sure you injectin a different area each time

BP grade is the UK equivalent of USP Water for Injection and reflects suitability for use in controlled research environments where reagent quality directly affects experimental reproducibility

Another is in vivo confocal microscopy of fluorescent dextran (MW ~ 10 kDa) that when injected intravenously penetrated the intercellular junctions up the region of the tight junctions