glutathione sulfhydryl Thiol–disulfide exchange between (GSH) and RAH393 generates and does not have gluten Frontiers | Glutathione: A Samsonian
Description
D-gal, D-galactose

These properties make copper peptides a valuable option for improving barrier integrity and reversing signs of oxidative stress in sensitive or aging skin
44,45,46 Conversely, patients with acromegaly have a higher risk of developing certain cancers, although the extent of that risk remains a topic of debate with conflicting observations

Yes, these peptides work synergistically and are often combined for optimal results
