Not all sunscreens contain nanoparticles.
You can check your brand here:
www.nanotechproject.org/
Select "Inventories"
Select "Consumer Products"
Select "Browse"
Select "Sunscreen"
What gets a sunblock on this list seems to be its use of "micronized" zinc oxide to provide physical screening from the sun without turning the wearer Casper-white. Other sunblocks use chemicals that react to UV light, basically absorbing it so that it does not affect the skin. Some use both to cover all bases.
I find the physical sunblocks much more effective, myself, and I am more afraid of melanoma and even just of ugly but non-deadly brown patches on my skin than I am of sunblock chemistry. I do swim in the early AM with sunblock on only my face, not my body, under the theory of balancing my wish to avoid unsightly brown spots against my need to make sure I get enough Vitamin D.
Not all sunscreens contain nanoparticles.
You can check your brand here:
www.nanotechproject.org/
Select "Inventories"
Select "Consumer Products"
Select "Browse"
Select "Sunscreen"
What gets a sunblock on this list seems to be its use of "micronized" zinc oxide to provide physical screening from the sun without turning the wearer Casper-white. Other sunblocks use chemicals that react to UV light, basically absorbing it so that it does not affect the skin. Some use both to cover all bases.
I find the physical sunblocks much more effective, myself, and I am more afraid of melanoma and even just of ugly but non-deadly brown patches on my skin than I am of sunblock chemistry. I do swim in the early AM with sunblock on only my face, not my body, under the theory of balancing my wish to avoid unsightly brown spots against my need to make sure I get enough Vitamin D.
