1 Natural sunlight shows all imperfections
Natural sunlight usually shows all imperfections in the face. This is why a person might seem less pretty in direct sunlight.
2 It's not familiar
According to psychologists we find familiar faces attractive. Most people are used to seeing themselves in their home mirrors with a certain degree of artificial lighting. Those people might find their images unfamiliar in sunlight.
3 Acne and scars become more visible
In direct sunlight Acne and scars usually become more visible. This can make a person seem less attractive. See why you look ugly in some mirrors.
4 Your Face appears less symmetrical
According to psychologists we find symmetrical face more attractive. Direct sunlight can make imperfections more clear and so our faces can seem less attractive.
5 You just woke up
Most people get exposed to the sun on their way to work or school. Right after waking up a person's face can look less attractive for sometime, See why you look ugly in photos.
6 Bad weather can affect the looks
Direct sunlight , dust and other weather conditions can affect the health of the skin. Looking in a mirror while being subjected to those conditions can make you look less attractive, See why sunglasses make us more attractive.
7 Sweat can affect how people look
During sunlight a thin film of sweat can be released. This layer of sweat can change light properties and result in changing our looks, See why we sometimes look ugly on videos.