GHK: A comprehensive researcher's handbook Tydes Active just means the serum contains a functional, lab verified concentration of real GHK Cu copper peptide not just colour or trace copper. Our formula includes 300mg of pure GHK Cu (1% Why NAC (N Acetylcysteine) in an IV? Reduces oxidative stress NAC helps replenish glutathione, one of your body's most powerful antioxidants. Supports detoxification Assists in clearing toxins Top 9 Benefits of NAC (N Acetyl Cysteine)