A peptide stored perfectly may remain highly stable beyond the estimated window, while the same peptide may lose significant potency much sooner if exposed to: Room temperature for extended periods Excessive light Improper pH Microbial contamination Repeated freeze-thaw cycles Aggressive shaking This is why laboratory technique is often just as important as the peptide itself
Glutathione is a little tripeptide molecule that is built along with three amino acids: glutamate (aka glutamic acid), cysteine and glycine
Wang G, Wang JJ, Zhi-Min Z, Xu XN, Shi F, Fu XL
Figure 1 GSTs represent major detoxification enzymes with a protein size of ~25 kDa (Eaton and Bammler, 1999) and multifunctional purposes, including induction of microsomal peroxidation (Strange et al., 2000) and heavy metal resistance (Zhang et al., 2013
Hyperpigmentation A 2% concentration cream can improve the melanin index and fade dark spots if used twice daily for ten weeks