Neither ingredient is categorically faster outcome depends on the type and depth of hyperpigmentation being treated
Nano-Lipid Carrier Delivery Badenhorst et al., Journal of Cosmetic Dermatology (2016) Badenhorst and colleagues evaluated GHK-Cu encapsulated in nano-lipid carrier (NLC) formulations against control serum in a controlled clinical trial measuring facial wrinkle volume and depth
Ex vivo studies sit between test-tube experiments and full clinical trials on the evidence scale
Folate levels in sweet corn cobs without bracts were reduced by 55%, 23%, and 20% by boiling, steaming, and microwaving, resp., compared to uncooked fresh corn 398
Further Reading: All About Longevity Ingredients What is the downside of BPC-157
The Wolverine Stack for Chronic Pain This is where things get especially interesting