Arterioscler Thromb Vasc Biol (1997) 17(1):6471
Instead, you pay separately for membership, visits, labs, and medications
The drug is administered subcutaneously (under the skin) rather than orally or via inhalation, which means it does not come into direct contact with the throat tissues
In the only published head-to-head study, GHK-Cu supported improved collagen production in 70% of subjects versus 40% for tretinoin
However, it can be used to slow and even halt hair loss in points of thinning, and create new hair growth
Avoids Undesirable Hormones: Crucially, it does so without significantly spiking cortisol (the stress hormone) or prolactin (a hormone often associated with sexual side effects)