Because GHK-Cu is a small molecule, it can penetrate the stratum corneum to reach the follicle
Qian D, Wang Q, Lin S, Li Y, Gu X, Xia C, et al
Instead, it is crucial in the regulation of intracellular water balance and distribution of key minerals and electrolytes such as sodium, potassium, and calcium
Diabetes Ther 2018;9:15331547 (semaglutide, SUSTAIN pooled): "only body weight had a relevant effect on the exposure of semaglutide"
Practicing stress management techniques, such as meditation and mindfulness, helps lower cortisol, which otherwise interferes with serotonin