HEMOGLOBIN.

This crucial protein contributes to skin health through several pathways. Primarily, it acts as a conditioning agent, promoting improved texture by enhancing skin softness, smoothness, and suppleness, offering significant hydration and nourishment particularly for dry or rough complexions. Present in the skin's outermost layer (epidermis), Hemoglobin alpha (HBA) functions as an endogenous defense system, shielding keratinocytes from oxidative stress caused by both external factors like UV radiation and internal factors such as mitochondrial dysfunction. It binds gases including oxygen, carbon dioxide, and nitric oxide, and serves as an iron carrier via its heme complex, contributing to its antioxidant capacity and roles in barrier function. Furthermore, HBA-derived peptides may possess bactericidal properties, protecting stem cells from skin microbiota, and its elevated expression during active hair follicle growth suggests a potential role in supporting hair development.