ghk-cu lysyl oxidase for Hair Growth: Protocols GHK-Cu – Pepturion
Description
The label states that vitamin B12 is important for growth, cell reproduction, blood formation, and nerve tissue

doi: 10.1016/j.ejphar.2012.11.055
Vitamin B5 plays an important role in a healthy nervous system and supports energy production

2010 doi: 10.1074/jbc.M110.154526

Yes, GHK-Cu can be photosensitive, meaning light exposure can contribute to its degradation