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Exclusion criteria were: (1) conference abstracts, theses, and case reports

For skin-first or cosmetic-first research, GHK-Cu vs BPC-157 usually leans toward GHK-Cu

While research is still ongoing, BPC-157 may remain active for several hours and potentially stay in the body for up to a couple of days depending on dosage, frequency of use, and individual metabolism

Formulated without mercury, steroids, dyes, fragrances and preservatives known to cause adverse skin reactions

"Unlike the intestinal mucosa, which has many natural barriers, the oral mucosa is easy to access and has a short length to reach blood vessels