Fillers, also known as dermal fillers or soft tissue fillers, are a type of cosmetic treatment that involves injecting a gel-like substance under the skin to add volume and smooth out wrinkles, fine lines and other facial imperfections.

The gel-like substance is usually made of hyaluronic acid, which is a naturally occurring substance in the body that helps to hydrate and plump the skin. It can also be made of other materials such as calcium hydroxyapatite, polycaprolactone, or poly-L-lactic acid, depending on the specific treatment goals.

Fillers are commonly used to treat wrinkles and sagging of skin around cheeks, jowl, nasolabial folds and marionette lines. It can also be used to add volume to cheeks, lips, and under-eye area, improve the appearance of scars, enhance facial contours and rejuvenate the skin's texture.

The treatment is relatively quick and straightforward, with minimal discomfort and downtime. Patients usually see the full effects of the treatment within a few days and can expect the results to last for up to a year or more depending on the type of filler used and the specific treatment area.