ghk cu cream vs injection GHK-Cu Topical Supports the improvement of the skin barrier for healthier skin and to even skin tone. GHK-Cu for Skin: SIGNAL's Guide
Description
Texas : Austin, Dallas, Fort Worth, Houston, New Braunfels, San Antonio, The Woodlands

Basically, it is whichever study comes first

Topical and intraperitoneal TB4 increased re-epithelialisation by 42% over saline controls at day 4, and by up to 61% at day 7 post-wounding

The research picture is nuanced
