Random question about perfume

So my grandparents lived in Oman for years and then Abu Dhabi for years as well, I lived with them in Oman for one year as a teen and went to school there. Well if anyone has been to the Middle East they know that they have the most amazing perfumes in the most beautiful bottles. These perfumes are all in oil form so they last forever. I have a ton of them and have them sitting on this pretty glass shelf in my bedroom. But they are in direct sunlight during the day. Does anyone know if this will affect them in a negative way? Should I be moving them out of the sun?