This cycle primarily involves -glutamyl peptidase (GGT), the only enzyme that catabolizes GSH, GSSG, and GS-X, as well as dipeptidyl peptidase (DP)
Some of them have positive effects on your skin - just like Butylene Glycol which is a popular substance even in eco/green cosmetic products

Product Features: Laboratory-grade purified water with 0.9% benzyl alcohol Sterilised and filled under controlled conditions Sealed glass vial with tamper-evident crimp cap Multi-use format when handled using appropriate laboratory practices Approximate in-use period of up to 28 days after first opening (subject to controlled handling and storage) Intended Use: Suitable for general laboratory applications, including: Preparation or dilution of non-therapeutic compounds Use in analytical or research procedures requiring sterile conditions Applications where inhibition of microbial growth is essential within a laboratory setting Important Information: Not for human or animal use Not for injection or parenteral administration Not for therapeutic, diagnostic, or clinical purposes Not supplied as a medicine, medical device, or therapeutic good Handling & Storage: Use only with appropriate laboratory procedures

Thanks to its high affinity for copper ions it has been praised for its regenerative, antioxidant, and anti-inflammatory properties
Journal of Controlled Release 243: 99-108
doi:10.1016/j.biopha.2016.11.013 Huang WL, Ma YX, Fan YB, et al