Ascorbyl Tetraisopalmitate

Ascorbyl tetraisopalmitate is a highly stable, oil-soluble vitamin C derivative used in premium brightening and anti-aging formulations. Its lipophilic structure allows deep penetration through the lipid-rich stratum corneum, where it gradually converts to active vitamin C. Clinical use shows improved skin tone, reduced UV-induced pigmentation, and antioxidant protection at concentrations of 1–10%. Because it operates at skin-friendly pH and does not oxidise in the bottle, it suits sensitive skin and long routines combining retinoids or acids. It is a favourite in J-beauty and K-beauty brightening serums where gentle, cumulative results are preferred over aggressive acid peels.