Fillers are injections that plump up wrinkles and smooth lines on your face. There are several types of fillers. Healthcare providers usually inject dermal fillers in the areas around your eyes, mouth and nose.Dermal fillers help to diminish facial lines and restore volume and fullness in the face. Dermal fillers are a cosmetic treatment which involves small injections. They are used to add volume to the soft tissue in the face – in areas such as the cheek, mouth, lips, around the eye and the jawline – combatting signs of ageing by filling in wrinkles and addressing dark circles, as well as thinning lips. They use a gel which usually includes hyaluronic acid. Facial fillers are substances injected into the skin to smooth wrinkles and make them less noticeable.Dermal fillers are gel-like substances.