As we age, aging changes gradually appear on the face, especially the deepening of the nasolabial folds is the most obvious. So what is the cause of this? How can we tell if the nasolabial folds have deepened? The nasolabial folds are divided into three degrees according to the degree of obviousness: 1, mild: no obvious creases and nasolabial ridges are visible at rest, and slight creases are visible when smiling. 2.Moderate: obvious nasolabial fold and nasolabial ridge are visible at rest, but the nasolabial ridge does not exceed the nasolabial fold. 3.Severe: deeper nasolabial folds are visible at rest, and how to remove nasolabial folds ridges exceed the nasolabial folds forward and down. What are the reasons for the formation of nasolabial folds? 1, skin aging and relaxation Undeniably, some people are born with heavier nasolabial folds than others, but in general, after the age of 35, nasolabial folds will slowly deepen. In addition to genetic factors, it is mainly caused by the age factor. As we grow older, the collagen and water content in the skin will gradually lose, and the subcutaneous fat will also shrink and sag, causing the skin to sag and age, forming a depression on the surface of the skin, which will produce nasolabial folds. 2, too much expression Want to know how your nasolabial folds appear because of your expression? It is very simple. If the nasolabial folds extend from the side of the nose to the corners of the mouth, it is formed because you love to smile too much; if the nasolabial folds extend downward at the corners of the mouth, then you should review whether you like to purse your lips and skim your mouth too much! 3, air pollution, computer and cell phone radiation and irregular daily routine Air pollution, computer and cell phone radiation and irregular daily routine can also accelerate the generation of nasolabial folds, so to solve the problem of nasolabial folds we must avoid these situations. The above three causes are the main reasons for deepening nasolabial folds, so you should pay more attention to them in order to keep your face from aging quickly. However, if you do have severe nasolabial folds, there is no need to be too anxious because there are many ways to remove them nowadays.