Studies suggest that As induces the generation of Reactive Oxygen Species (ROS) leading to oxidative stress and lipid peroxidation in plants (Shukla et al., 2018)
On a cellular level, glutathione may help to protect against: In addition to combating oxidative stress, glutathione is involved in enzyme activation, metabolic processes, DNA creation and repair, and protein production
That can help reduce breakage and improve the look of fullness, but its not the same as stimulating new hair growth
This article separates the two, then shows how a clinic in Tampa decides whether a peptide like this belongs in your plan at all
Changes in brain GSH levels over time were determined as the difference between the GSH/Cr ratio (or absolute GSH) at each time point, relative to baseline