Fillers are a cosmetic injectable treatment which work to plump and fill out lines and hollows, rejuvenating the face and creating a fresher, more youthful appearance. We can use fillers to treat lines and wrinkles, loss of volume, sagging jawline, dark undereyecircles and eye bags. Filler “fills in” a void. Think: Smile lines, cheeks, jowls, tear troughs, smoker’s lines, lips, temples, naso-labial folds. Filler does exactly what it sounds like. It fills in. As we age, we lose volume (fat) in our face and this leads to fine lines, wrinkles, and depressions in our face