Restylane Silk was specifically developed to treat the lips and the surrounding areas, such as lip lines, laugh lines, smile lines, and to provide smoothness and fullness to the lips. The drug is applied via injection to the active sites. That is the only way to make sure the acid gets into the desired areas and starts absorbing large quantities of water as it disintegrates into the muscle, helping to restore fullness and that youthful plum. Depending on where the wrinkles appear, Restylane can be applied to all of the: - Lips - Laugh lines - Sad mouth corners - Crow’s feet - Frown lines - Tear troughs - Chin and - Marionette lines These are common sites where wrinkles not only appear, but do so significantly enough to show aging.