I've been using Retin-a .025% (soon to go up, but I was starting at low doses to get used to it) for about 8 months. I've always been very adamant about using sunscreen and I wear it every day, even in the winter. However, I recently realized that I might be getting sun damage indoors. When I go to bed, I leave my blinds open so that when I wake up I can see daylight. But if I have Retin-a on my skin when I go to bed, could the sun from my window be giving me sun damage?