gadolinium poisoning and glutathione MRI Contrast: Risks & Removal Diagnostic Pathology: Open Access -

"Depending on the type of peptide, some peptide serums can also help to improve the appearance of expression lines as well as boost radiance and hydration in the skin." "It's important to note that unlike collagen, which is too large to penetrate the skin topically, peptides are shorter chains and are able to penetrate the skin to signal to the skin to boost collagen production," she says

A global review on short peptides: frontiers and perspectives

Doctors will choose one or the other based on the patients specific condition

Gut & Skin Support KPVs immune-modulating benefits promote gut balance and reduce skin irritation from inflammatory conditions