Tretinoin loaded NLCs-based sunscreen cream; preparation and characterization.

FDA has recognized tretinoin as the gold standard for skin anti-aging products but it has the disadvantage of being a strong irritant and unstable in light. Nanostructured lipid carriers (NLCs) are advanced, second-generation solid lipid nanoparticles with the intriguing feature of acquiring the properties of physical sunscreens in terms of UV ray scattering. Thus, this study was designed to formulate a tretinoin-loaded NLCs-based sunscreen cream to potentiate the photo-stability of tretinoin.