Cheapest way to fix nasolabial fold lines? (photo)

You are young and still your nasolabial fold is only mild, the cheapest and simple way to get rid of it is with fillers, here in our practice only 1 ml syringe of Volift form Juvederm Vycross will be enough for the job. There are a lot of other ways, but still I think that's your best choice. 

A combination approach will give the most improvement. I recommend fillers for the folds themselves but also lifting around the mouth and cheeks to build underlying anatomical support. In our practice we combine sculptra with other fillers "layered" on top and lasers, rf treatments, J Plasma and peels to get the most conservative natural look. Cost will vary, but please see a facial sculpting expert. Best, Dr. Emer

At 21 you should not need much to smooth out your nasolabial folds. Go to a provider who is not over aggressive for an evaluation. Best Wishes, Maurice Vick MD