Natural Antioxidant-Loaded Nanoemulsions for Sun Protection Enhancement

The aim of this study was to formulate nanodispersions encapsulate antioxidants extracted from olive mill wastewater (OMW) and phycocyanin Spirulina maxima act as enhancers for the skin’s protection against UV radiation. For purpose, two water-in-oil nanoemulsions were prepared using a low-energy homogenization method. Both systems based on isopropyl myristate continuous phase, while water or mixture glycerol used dispersed phase. Then, OMW encapsulated in core nanoemulsions. empty antioxidant-loaded then structurally studied dynamic light scattering detection their droplet size stability over time. Electron paramagnetic resonance (EPR) spectroscopy adequate probes applied characterization surfactants’ monolayer presence absence antioxidants. It found that mean diameter emulsions 200 nm. remained stable 2 months. assessed scavenging activity model radical by applying EPR spectroscopy. loaded exhibited an increased antioxidant capacity compared with ones. Finally, most system added commercial sunscreen lotions overall sun factor (SPF) assessed. contained extracts showed increase SPF value.