JUVEDERM injectable gel is a smooth gel filler your doctor eases under your skin to instantly smooth out those wrinkles or folds that look like parentheses along the side of your nose and mouth. Results aren't just instant, they're so smooth and natural, everyone will notice but no one will know. JUVEDERM injectable gel is produced through HYLACROSS technology creating a high degree of cross-linking and promoting duration for up to 6 months or longer.