which last three months to a year–and longer-lasting substances such as Sculptra, Radiesse, Evolence, and fat, which persist for one to two years. They all require ongoing treatments because as they are gradually degraded and reabsorbed into the skin, the treated area will eventually return to its original contour.
On the other hand, permanent and semipermanent fillers such as liquid silicone and a variety of hybrid skin fillers containing tiny particles suspended in a hyaluronic acid or a collagen base are meant to last forever. They are much more controversial as a category because of the risks surrounding them.
Skin Fillers: Hyaluronic Acid
What Is It?
Temporary skin fillers, clear viscous gels made from cross-linked sugar molecules that are found naturally in skin. Restylane is preferred for moderate wrinkles. Perlane for deeper wrinkles.
What To Expect
After the skin has been anaesthetized, soft malleable gels are injected through a very small needle. HA works similarly to a sponge, drawing in water and expanding to provide volume to the face. It’s often used to soften the nasolabial folds.
Treatments last six months to a year or longer. May need two treat