Leucine, an essential amino acid that our bodies are unable to synthesize independently, must be obtained through dietary intake or supplementation. Similar to isoleucine, leucine participates in collagen production, crucial for maintaining skin elasticity and firmness. Additionally, leucine contributes to the integrity of the skin’s barrier function, reinforcing the outer layer known as the stratum corneum, which shields against environmental stressors. Furthermore, leucine aids in wound healing by facilitating the formation of new blood vessels, expediting tissue regeneration, and enhancing collagen synthesis at the site of injury.