does sunscreen prevents skin darkening?

answers1: nope it just prevents your skin from being damaged by the sun.
answers2: here's an article about sunscreen and tips on how to lighten
your skin too -
answers3: Sunscreen, regularly applied, will stop the skin from
getting darker as a reaction to sunlight. It will work no matter what
your skin color is. <br>
<br>
If you are darker skinned, try one of the "no rub" spray-on
sunscreens. Some of the high SPF, lotion types might leave a bit of a
haze on darker skin. <br>
<br>
It is a great idea to protect your skin from too much sun, no matter
how much pigment you have. You will still be protecting your skin
from aging. <br>
<br>
Women who are fanatical about keeping their skin fair stay out of the
sun, wear long sleeved shirts, and resort to an umbrella or "welder's
mask"-type visor when they need to be out.