Rather than replacing retinol, many routines use both at different times or stages, depending on the skins needs
For hair specifically, GHK-Cu works through multiple interconnected mechanisms
To investigate the neural mechanisms of Cagrilintide, next-generation sequencing (NGS) was performed on three key hypothalamic and brainstem regions: the area postrema/nucleus tractus solitarius (AP/NTS), lateral parabrachial nucleus (LPBN), and ventromedial hypothalamus (VMH)
Research demonstrates that GHK-Cu enhances multiple aspects of follicle function including extension of the anagen phase duration, improvement of hair shaft quality through enhanced keratin and keratin-associated protein expression, and counteraction of negative hormonal influences on follicle health
The answer starts at the cellular level
Many therapies that perform exceptionally well in animals ultimately fail to deliver the same benefits in humans