hi, the causes for under eye bags can be many. Sometimes it is lifestyle related like excessive smoking, alcohol consumption, lots of stress, improper sleep, sleeping on sides or in prone postion or use of excessive salt in food. Even sun exposure can lead to eye bags as uv rays weaken the skin collagen. Similarly kidney disorder or thyroid disorder can also lead to fluid retention. To treat the condition, cut on your smoking, alcohol and excessive salt consumption. Use a good sunscreen and sleep in a supine propped up position. Secondly caffeine or haloxyl based under eye creams also aid in reduction of under eye bags. you can use cold cucumber slices, tea bags or rosewater eye pads to soothe the eye.lymphatic drainage and microcurrent therapy are also useful. However results with these therapies are temporary. Dermal fillers can also improve your eye contour. It should be noted that fillers if not taken by an expert can make your eye bags worse. so caution is required and a filler expert should only be consulted. If nothing works, get your eyebags surgically removed by a procedure known as blepharoplasty. Hope that solves your query. take care