When it comes to the beauty questions I’m asked most often, I’ve noticed how frequently the topic of dark circles arises. There are so many influencing factors beyond our control (genetics, for instance, play a significant part) but it is important to know that other variables are within your power if you are trying to reduce the appearance of under-eye shadows. Beyond sleep: Why lifestyle factors and genetics cause dark circles “Some people simply have dark circles because they’ve genetically inherited thinner skin under their eyes or a higher concentration of pigment in that area,” explains Gema Cabañero, founder of her eponymous Anti-Ageing and Advanced Aesthetic Clinic in Madrid, Spain. However, lifestyle is also a crucial factor in understanding why some people struggle with under-eye shadows while others do not. “Factors such as smoking, excessive alcohol consumption and a high-salt, nutrient-deficient diet can worsen skin health and make under-eye shadows more visible,” says the expert.  © GettyThere are multiple factors, from genetics to a high salt diet, that may cause dark under-eye circles, or make …