Smile lines or laugh lines or nasolabial folds are common complaints in women after about 30 years of age.  The mid-face tends to lose volume faster than other areas in many women and this makes the nasolabial folds look deeper.
A simple easy treatment is a filler.  There many fillers on the market and they were almost all brought to market and approved by the FDA to treat this problem. Of all the fillers available, the patients who come to see me almost always chose to have Bellafill because it produces very natural looking results and lasts a long time (well over 5 years).
There are many examples of patients who have been treated with Bellafill for their nasolabial folds here.