https://ci.creativebiomart.net/characterization-of-nanotechnology-in-cosmetics.html
Many substances have been encapsulated in nanostructures, including retinoids, antioxidants, sunscreens (such as avobenzone), peptides, decolorants, etc. Nano-sized particles also can scatter UV, so they can act as physical UV filters. In addition to these advantages, nanoparticles generally have good hydration.