SunGuard gives a UPF protection of 30, active ingredient is an nanotechnology product. Bemotrizinol is marketed as Tinosorb & is produced in the form of very small particles (nanoparticles), mostly ranging between 100 and 200 nm. Wavelengths covered: about 280-400 nm, which covers both UVB and UVA ranges; peak protection at 303 nm and 358 nm The UPF fabrics truly do work, and they are moisture wicking and actually keep you cooler in the sun - hard to believe but true. - bought mine from HK for $10 instead of $80 in the USA. CHeck it OUT! I don't have enough words for a hub - just FYI.
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