Why is My Face Getting Darker Without Sun Another reason behind why is my face getting darker without sun is dehydration and poor hydration habits. When the skin lacks adequate moisture, it becomes dry, rough, and uneven. Dehydrated skin reflects light poorly, making it appear darker and duller. Insufficient water intake, excessive caffeine consumption, alcohol use, and lack of proper moisturization can all contribute to this issue. Over time, chronic dehydration affects skin elasticity and clarity, giving the face a darker appearance. http://sknlex.com