For nonclinical design, dose-range finding, route feasibility (i.p., s.c., osmotic minipumps), and exposureresponse mapping in the selected strain/sex/age are recommended before hypothesis testing
Besides, Im such a sucker for any Vitamin C serum because I just know they work, and actually work together with sunscreen to protect our skin better in the day
Evidence summarized by Peptide Sciences notes that copper(II) ions can inhibit type 1 5--reductase activity by up to ~90% in vitro (half-maximal inhibition at ~0.12 g/mL Cu), with substantially less effect on type 2 suggesting follicle-localized DHT suppression without system-wide androgen blockade
Second, cancer cells are highly adaptable and can activate compensatory antioxidant pathways, like the thioredoxin system, to survive GSH inhibition, reducing therapeutic effectiveness