ghk-cu study 2025 Frontiers Part 2 of my favourite

A cheap vial with no COA is never the bargain it looks like

It is one of the more promising natural preservatives that can be used even alone (recommended at 2-4%), but it's not as effective as more common alternatives, like parabens or phenoxyethanol.

patented combination of 200 mg lidocaine alkalinized with sequential instillation of 8.4% sodium bicarbonate instilled once daily for 5 consecutive days with one hour retention), more patients in the treatment group (30% and 24% respectively) experienced clinically significant improvement compared to patients in the placebo group (10% and 11.5%, respectively)

De bevindingen komen uitsluitend uit dieronderzoek