This invention discloses a composition, cosmetic, and preparation method with dual whitening and
skin-
smoothing effects. The composition comprises acetyl
glucosamine,
ascorbic acid tetraisopalmitate, and
adenosine compounds in a
mass ratio of (0.1–5):(0.1–10):(0.01–7). It is applied in
cosmetics. Compared with existing technologies, the components of this invention work synergistically, resulting in a mild and non-irritating composition with simple and clearly defined components, exhibiting excellent whitening and
skin-
smoothing functions.