Neck neck lines are very deep may be caused by obesity, skin aging, etc., mainly through weight control, hyaluronic acid injections, botulinum toxin and other methods to improve, but not necessarily can be completely eliminated. 1. Obesity: if the body is too obese, resulting in excessive fat accumulation, easy to deepen the phenomenon of neck lines, pay attention to proper weight control, usually do more physical exercise, diet less greasy food. 2. Skin aging: with the gradual increase of age, skin will be aging and relaxation, thus appearing neck lines, can be injected with hyaluronic acid, which can play the role of filler, you can also take local injection of botulinum toxin, which can effectively alleviate the neck lines, but with the metabolism and absorption of the drug, the neck lines will reappear. If you want to take injections to improve neck lines, it is recommended to go to a regular hospital and follow the doctor’s instructions to standardize the treatment, so as to avoid adverse consequences.