Here’s the scoop on Restylane from Dr. Rudy’s site, http://www.doctorsofcosmeticsurgery.com/

Restylane has been used in more than three million treatments in over 70 countries to correct a variety of wrinkles and to enhance the appearance of the lip border. It is a safe and natural cosmetic dermal filler that restores volume and fullness to the skin to correct facial wrinkles and folds, such as nasolabial folds, which are the lines from the nose to the corners of the mouth.

Restylane is cosmetic dermal filler made of hyaluronic acid, a natural substance that already exists in the human body. Restylane maintains its shape using the body’s own moisture. The hyaluronic acid in Restylane is hydrophilic or “water loving.” As hyaluronic acid gradually degrades, each molecule binds to more water and over time, the same volume can be maintained with less hyaluronic acid. This ability of hyaluronic acid to bind to water is what helps provide lasting results.

After your treatment, you might have some redness or swelling. This will normally last less than seven days. Studies have shown that Restylane effects generally last for about six months. Follow–up treatments are typically scheduled at six–month intervals. (Individual results may vary.)