I have been considering receiving facial fillers for a while now, but I’ve never known where the procedure can be performed. I did some online research and found a Beverly Hills plastic surgeon's website. It says, "Collagen can be injected into almost any location on the face where wrinkles occur. Most commonly, it is used to fill the nasolabial folds, smile lines, laugh lines and lines of the forehead. It has also been very popular for Lip Augmentation."