Adenosine, a naturally occurring nucleoside, has emerged as a star ingredient in skincare for its remarkable ability to soothe inflammation, promote wound healing, and support skin elasticity. Derived from the breakdown of ATP in cells, this compound (C₁₀H₁₃N₅O₄) plays a crucial role in cellular energy metabolism and has been harnessed for its therapeutic potential in dermatology. First identified in yeast fermentation products, adenosine is now synthetically produced and widely incorporated into cosmetic formulations for its multifaceted benefits.