When to Seek Medical Attention for Delayed or Irregular Periods Changes in the menstrual cycle can occur naturally due to stress, hormonal fluctuations, illness, travel, exercise, or lifestyle changes
doi: 10.1038/s41420-022-01212-0 92 MachariaM.DasP
The Hostynek and Maibach group at UCSF measured exactly this in 2011: human skin permeation of GHK-Cu as a function of skin layer, with the result that the peptide accumulates in the upper stratum corneum but does not pass through to viable epidermis or dermis in any meaningful quantity 4
In case of a missed dose, give the missed dose as soon as possible
Thats in addition to Vitamin Cs exceptional ability to prevent environmental damage
Briefly, at typical physiological GSH concentrations and pH, the reaction between ONOO - and GSH will predominantly be a two electron oxidation process leading to GSSG formation (Quijano et al., 1997)