How can skin darken without being in the sun?

I have not been in the sun since winter, literally. But my skin is darker! I know for sure it is darker because my foundation, which matched my skin **perfectly**, is now too light for my face.





How can this be?|||Spring and summer mean longer hours the sun is out... unless all your windows are 100% UV reflective, you%26#039;re getting more sun than in winter. When you%26#039;re in the car, when you%26#039;re sitting in a room with the blinds or drapes open... etc.





Also, foundation can change colors -- if it%26#039;s gotten too warm, too cold, been left in the sunlight, is more than 2 months old many of the ingredients become unstable and the color pigments inside are very senitive -- a little change in chemistry and the color can go %26quot;off%26quot;.|||maybe you hve been in the sun more than you realize





if you ski that is an easy way to get dark, or just being outside for 5 minute will make you darker|||well your gonna have to get at least some sun lf you want darker skin