Another crucial point is that, when an individuals antioxidant defense system is weak or saturated, inhaling additional ROS or other reactive metabolites produced by the biotransformation of chemicals in tobacco smoke can increase the amount of oxidative stress caused by the gas-phase and tar-phase derived ROS (60)
L-ascorbic acid's low pH can destabilize the GHK-Cu complex
Experimenting with too many products can actually wreak havoc on the skins natural moisture barrier, which is made of skin cells, lipids, cholesterol, amino acids, and fatty acids
The cumulative effect over multiple cycles can exceed what any single cycle achieves
decades of cosmetic and wound-healing literature
Reputable suppliers use appropriate packaging to protect peptides during transit