Lipid and Polymeric Nanoparticles for Organic Sunscreen Filters

Resumen

Introduction: Organic filters are used in sunscreens due to its photoprotective effect on the skin against ultraviolet radiation. However, there is concern regarding their usage, due to its photostability, penetration into skin, skin irritation, and toxicity. Therefore, over the years, researches have been carried out in an attempt to improve these characteristics of organic filters. A large part of this research involves nanotechnology.

Objective: To analyze the usage of solid lipid nanoparticles, nanostructured lipid carriers, and polymeric nanoparticles to overcome drawbacks in the production of organic filters.

Methods: Searches in PubMed, Google Scholar, and Science Direct were carried out, between May and September 2020, using the keywords nanostructured lipid carriers, solid lipid nanoparticles, polymeric nanoparticles, and organic sun filters. The most relevant results of the search were selected for the study.

Conclusions: Nanostructured lipid carriers, solid lipid nanoparticles, and nanocapsules have been used efficiently for the production of organic filters, with better photostability and less skin penetration, maintaining good sun photoprotection.

Keywords: organic filter; sunscreen; lipid nanoparticles; polymeric nanoparticles.