[Sun Care] Should I wear sunscreen indoors if I'm sitting in front of a window BUT the sun isn't directly beaming at me?

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I sit at a window that only receives direct sunlight in the early morning, whereupon I close the blinds. However, for the rest of the day only daylight shines through (I open the blinds again). Does this warrant sunscreen application or should I not worry myself?
Girls Blog 2015
Submitted by Meisie