Nanoemulsion Containing Kojic Dip…on to Treat Melasma.

Researchers created a tiny-particle formula (nanoemulsion) combining kojic dipalmitate and rosehip oil that successfully penetrated skin and showed depigmenting power comparable to vitamin C. The formula was stable for at least 30 days when refrigerated, didn't damage skin cells at tested concentrations, and achieved over 95% incorporation efficiency—meaning the active ingredient actually stayed in the formula instead of separating.