Topical GHK-Cu products is usually the more tolerated product for all skin types
A.YoungS
It's really important that scientific discoveries are translated from the bench cells, animals into humans through a series of clinical trials that prove at every step, with increasing numbers of subjects, that this product is effective, that it's safe, and that you know how much of it to administer
Consider the following starting framework: Start with 0.1 mg once daily (morning) to assess tolerance and initial response
Poon HF, Abdullah L, Mullan MA, Mullan MJ, Crawford FC (2007) Cocaine-induced oxidative stress precedes cell death in human neuronal progenitor cells
2B show that the presence of 2 M PSC-833, a specific inhibitor of P-gp ATPase [33], reverses the collateral sensitivity of CHO R C5 and MDA-Doxo 400 cells to tamoxifen, with shift in IC 50 values from 0.900 0.090 and 3.582 0.048 M to 2.998 0.071 and 4.336 0.895 M with PSC-833 for CHO R C5 and MDA-Doxo 400 , respectively