🐅 Nano Vs Non Nano Zinc Oxide
This study was designed to determine whether nano-sized ZnO has the potential to cause acute cutaneous irritation using cultured HaCaT keratinocytes and a human skin equivalent as in vitro models, compared to non-nanomaterials. Commercial nano ZnO with different sizes (50 nm and 100 nm) was characterized by dynamic light scattering (DLS) and
This can be achieved by doping nano-ZnO with metals and non-metals, modifying with carbon nanomaterials, and coupling with other oxide semiconductors to form heterostructures [60,61,62,63,64,65,66]. In a previous article, we summarized and discussed the toxic effects of nano-ZnO toward mammalian (eukaryotic) cells [ 67 ].
Non-nano zinc oxide powder is recommended as it doesn't get absorbed into the skin and stays on the surface, providing protection from UV rays. You can adjust the amount of zinc oxide powder to increase or decrease the SPF of the lip balm. Essential oils are optional, but peppermint oil can provide a refreshing sensation on the lips.
“Both nano particle—a smaller particle size—and traditional zinc oxide sunscreens are both safe and effective, and both will be considered safe for reefs. The only difference is the cosmetic feel on the skin.” So you’re pretty much good to go with a mineral-based option. How do I know if a sunscreen is "reef friendly"?
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nano vs non nano zinc oxide