The detoxification enzyme systems
You might be using lighter moisturizers that provide less occlusion over your copper peptide serum
Cephalalgia 39(13):16751682 Noseda R, Kainz V, Borsook D, Burstein R (2014) Neurochemical pathways that converge on thalamic trigeminovascular neurons: potential substrate for modulation of migraine by sleep, food intake, stress and anxiety
That, unfortunately, means that most of the glutathione you take through this method is going to be broken down into bits of protein, rather than being absorbed and used as glutathione itself
The company behind it settled fraud allegations for over $4 million
Stability note: Avoid repeated freezethaw cycles to help preserve peptide integrity