do u know tt sunblock/sunscreen is very impt (even w/o
makeup)?
helps in anti-aging as harmful UV rays will damage our collagen
fibers, which will make our skin "age" faster......
Sunscreens are the most popular at the moment. Available in
creams, lotions and gels, they contain chemicals that absorb UV
rays. They are also inconspicous on the skin. The chemicals that
are most often found in sunscreens include PABA, Benzophenones,
Cinnamates, Salicylates,
Sunblocks instead of absorbing UV rays, reflect them. At one
time sunblocks could be spotted by the opaque white film, but new
technology has created sunblocks with particles so tiny, that the
opaque film in no longer noticeable. Chemicals most common in
sunblocks include Titanium dioxide and zinc oxide.
What's an SPF?
Sunblocks and sunscreens are rated with SPF numbers. SPF refers
to the "Sun Protection Factor" for UVB rays only. A sunscreen with
a SPF of 15 will delay sunburn from occurring for 15 times (in
minutes) longer than normal if using no protection at all. For
example, if it takes someone 20 minutes to sunburn and they applied
a sunscreen with an SPF of 15, they would be able to remain in the
sun for 300 minutes (15x20). SPF's are rated typically from 1 to
60, although there are some products with an even higher rating.
While most suggest an SPF of 15 for everyday use, the activity,
time of day, time of year, and the duration should all be
considered.
