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Description
Why does tretinoin cause peeling and GHK-Cu doesn't

Hair restoration typically requires 3-6 months of sustained effort, which may span 2-3 cycles with breaks

Protect from light, heat, and contamination to maintain full effectiveness throughout your protocol

However, the direct use of HGF or any other protein neurotrophic factor as a therapeutic agent has two serious limitations: 1) large size and hydrophilic character, which preclude BBB permeability

Bibcode:1980Natur.288..715P

International Journal of Cosmetic Science, 24 (5), 303-310
