Sterile water has nothing in it, so it's strictly single-use within 24 hours
A short history: wound repair first, then skin and scalp care GHK-Cu got attention in early wound research because it showed signals tied to tissue repair, collagen organization, and reduced inflammation in skin models after injury
If other acids are used, neutralize to pH 7 with triethanolamine, etc., or dilute to an acid concentration of 1% or less before measuring
It improves skin elasticity, firmness, and reduces fine lines, wrinkles, and photodamage 1
This mechanistic distinction makes this lipotropic compound essential for researchers studying nutrient-based metabolic support rather than pharmacological intervention
Global B2B Supply