The most common fillers are made with hyaluronic acid (HA), a naturally occurring substance in the body that retains moisture and elasticity in the skin. HA-based fillers bind to water molecules, keeping your skin hydrated, plump, and youthful-looking. Other types of fillers include biostimulating fillers that help stimulate collagen production over time.
Tip: Arrive with a clean face (no makeup or lotions). If you have a cold sore, inform your injector—pre-treatment medication may be recommended.