Skin VS UV
90% of skin cancers are associated
with exposure of UV light.
Sunscreen helps greatly to reduce
excess exposure to the harmful UV
rays.
Sunscreen helps to shield the human
body from the sun’s rays by absorbing the light or reflecting it
away dependant on their ingredients.
Sunscreen and SPF
The efficiency of the sunscreen is SPF factor
(sun protection factor).
The most effective sunscreen should block or
absorb both UVA and UVB radiation.
SPF values can be calculated determinating
the amount of time a person can stay in the
sun without getting sun burn.
15 SPF/ how long you can stand outside.
No sunscreen - 10 mins before getting burned
With sunscreen- 150 mins before getting
burned.