What Does L-Carnosine Do?L-Carnosine is a dipeptide that is found in the brain, heart, skin, muscles, kidneys and stomach. L-Carnosine supports healthy aging and cellular rejuvenation by its effects on two mechanisms: Glycation and Free Radical Damage. Glycation is the uncontrolled crosslinking of sugar molecules to proteins and is implicated in loss of cell function, genome integrity and accelerated aging. L-Carnosine also supports brain function by reducing lipid peroxidation and stabilizing cell membranes during the aging process.