GHK-Cu is the most beginner-friendly in this category because it is a naturally occurring compound your body already produces
In this state, it can no longer function as an antioxidant
Consequently, Zubair et al did not recommend glutathione as a skin-lightening agent.14 In contrast, Weschawalit et al3 reported a statistically significant effect of glutathione as a skin-lightening agent, but this was limited to a group of participants aged older than 40 years who received GSH, a reduced form of glutathione, on the sun-exposed area of the right forearm.3 Arjinpathana et al1 used a Mexameter (Courage+Khazaka Electronic, Kln, Germany) to measure the melanin index as the main output parameter and found that glutathione was most effective on sun-exposed skin.1 In their systematic review, Dilokthornsakul et al15 likewise reported that glutathione might lighten skin tone in sun-exposed areas
With Other Peptides Certain peptides complement GHK-Cu for hair regrowth
Retrieved from Al-Atif, H
This makes them a staple in regenerative and recovery-focused protocols
