sublingual ghk cu Oral Liposomal Copper Is Glycyl-Histidyl-Lysine-Copper (GHK-Cu) absorbed sublingually?

Sikiric P, Udovicic M, Barisic I, Balenovic D, Zivanovic Posilovic G, Strinic D, et al

First, the complex appears to act as a copper transporter, delivering ionic copper to cutaneous cells where it may activate copper-dependent enzymes involved in extracellular-matrix remodeling and angiogenesis

Palmitoyl Tripeptide-1 & Palmitoyl Tetrapeptide-7 Matrixyl Complex

On very rare occasions, if a vial has been compromised during transit, reconstitution may result in a cloudy solution

Short answer: yes, for many combinations but with important rules

Published research on GHK-Cu's broad gene expression effects and anti-inflammatory actions suggests potential indirect benefits for hair through systemic mechanisms reduced inflammatory signaling, improved tissue remodeling capacity, enhanced antioxidant defense (Pickart et al., 2018)