Dermal fillers are injectable substances used to fill in wrinkles, lines, and hollow areas of the face to restore volume and rejuvenate the skin. They're often made of hyaluronic acid, a naturally occurring substance in the body that helps maintain skin volume and hydration. When injected, dermal fillers can plump up areas that have lost volume due to aging or other factors, such as sun exposure or weight loss.

Fillers can be used to enhance features like lips and cheeks, as well as to fill in lines around the mouth, nose, and eyes. The effects are temporary, typically lasting several months to a year, depending on the type of filler used and individual factors like metabolism and lifestyle.

While generally considered safe, dermal fillers should only be administered by trained and experienced medical professionals to minimize the risk of complications such as bruising, swelling, or infection. It's essential to discuss your goals and any concerns with a qualified practitioner before undergoing treatment.